This document provides an overview of lambda expressions in Java 8. It begins with an introduction to lambda expressions and their history in Java. Lambda expressions allow implementing functional interfaces more concisely than anonymous classes. The document discusses key aspects of lambda expressions like syntax, argument lists, return types, and local variable capture. It also explains how lambda expressions integrate with functional interfaces to provide a target type within Java's type system. The overall goal of lambda expressions is to support parallel operations on collections in the Java class library.
Lessons Learned: Scala and its EcosystemPetr Hošek
This presentation is motivated by the continuous growth of Scala language popularity thanks to many new concepts it offers. Therefore, it makes a perfect sense to take a further insight on this language. Beside the language itself, its ecosystem is also very important. That is why I will focus on the Scala ecosystem in this presentation.
Object Oriented Database Management systems evolved to address the complex objects in emerging applications that could not be effectively represented in the relational model. ODBMSs provide a direct representation of objects to the database, overcoming the impedance mismatch between application data structures and the relational model. ODBMSs take two approaches - persistent object oriented programming languages that add persistence to programming language objects, and object-relational databases that extend relational databases with object features. The Object Database Management Group developed standards including an object model, query language, and language bindings to allow portability between ODBMS systems.
This document describes a master's project proposal for JaCIL, a compiler that translates Common Language Infrastructure (CLI) bytecode to Java Virtual Machine (JVM) bytecode. The project involves developing a compiler to translate CLI assemblies, types, methods, and metadata into equivalent JVM class files and bytecode. It will also include a runtime library to support CLI semantics not directly supported in the JVM, such as method pointers and value types allocated on the stack. The proposal outlines the scope of the project, related work in CLI-JVM translation, and a functional specification and design for the compiler and runtime components.
Living in the Matrix with Bytecode ManipulationC4Media
Video and slides synchronized, mp3 and slide download available at URL http://bit.ly/1jtTJtd.
Sponsored by New Relic. Ashley Puls introduces three common byte code manipulation frameworks: ASM, CGLib, and Javassist, providing enough detail to get one started. Filmed at qconnewyork.com.
Ashley Puls is a senior software engineer at New Relic Inc. which provides an all-in one web application performance tool. She works on the Java Agent team in Portland which focuses on instrumenting Java applications.
The document introduces the Scala programming language. It discusses Scala's history and motivation, as well as its key features. Scala was created by Martin Odersky and combines object-oriented and functional programming. It compiles to Java bytecode and is fully interoperable with Java. Scala aims to improve on Java by allowing for more concise and expressive code through features like functions as first-class objects, pattern matching, immutable data structures, and built-in support for concurrency with the actor model. The document also outlines the Scala ecosystem including frameworks, tools, and companies that use Scala in production.
This document summarizes the basic steps for connecting to an Oracle database and executing queries using JDBC:
1. Import the necessary JDBC and Oracle packages.
2. Register the Oracle JDBC driver with the DriverManager.
3. Open a connection to the database by calling getConnection() and specifying driver-specific information like the URL, username, and password.
4. Create a Statement object from the Connection to execute queries.
Java 8 introduced many new features including lambda expressions for functional programming, default methods and static methods in interfaces, method references, repeating annotations, improved type inference, the Optional class, streams API for functional-style collections processing, and Base64 encoding support in the standard library. It was a major update to the Java programming language and development kit.
This presentation is motivated by the continuous growth of Scala language popularity thanks to many new concepts it offers. Therefore, it makes a perfect sense to take a further insight on this language. Beside the language itself, its ecosystem is also very important. That is why I will focus on the Scala ecosystem in this presentation.
Lessons Learned: Scala and its EcosystemPetr Hošek
This presentation is motivated by the continuous growth of Scala language popularity thanks to many new concepts it offers. Therefore, it makes a perfect sense to take a further insight on this language. Beside the language itself, its ecosystem is also very important. That is why I will focus on the Scala ecosystem in this presentation.
Object Oriented Database Management systems evolved to address the complex objects in emerging applications that could not be effectively represented in the relational model. ODBMSs provide a direct representation of objects to the database, overcoming the impedance mismatch between application data structures and the relational model. ODBMSs take two approaches - persistent object oriented programming languages that add persistence to programming language objects, and object-relational databases that extend relational databases with object features. The Object Database Management Group developed standards including an object model, query language, and language bindings to allow portability between ODBMS systems.
This document describes a master's project proposal for JaCIL, a compiler that translates Common Language Infrastructure (CLI) bytecode to Java Virtual Machine (JVM) bytecode. The project involves developing a compiler to translate CLI assemblies, types, methods, and metadata into equivalent JVM class files and bytecode. It will also include a runtime library to support CLI semantics not directly supported in the JVM, such as method pointers and value types allocated on the stack. The proposal outlines the scope of the project, related work in CLI-JVM translation, and a functional specification and design for the compiler and runtime components.
Living in the Matrix with Bytecode ManipulationC4Media
Video and slides synchronized, mp3 and slide download available at URL http://bit.ly/1jtTJtd.
Sponsored by New Relic. Ashley Puls introduces three common byte code manipulation frameworks: ASM, CGLib, and Javassist, providing enough detail to get one started. Filmed at qconnewyork.com.
Ashley Puls is a senior software engineer at New Relic Inc. which provides an all-in one web application performance tool. She works on the Java Agent team in Portland which focuses on instrumenting Java applications.
The document introduces the Scala programming language. It discusses Scala's history and motivation, as well as its key features. Scala was created by Martin Odersky and combines object-oriented and functional programming. It compiles to Java bytecode and is fully interoperable with Java. Scala aims to improve on Java by allowing for more concise and expressive code through features like functions as first-class objects, pattern matching, immutable data structures, and built-in support for concurrency with the actor model. The document also outlines the Scala ecosystem including frameworks, tools, and companies that use Scala in production.
This document summarizes the basic steps for connecting to an Oracle database and executing queries using JDBC:
1. Import the necessary JDBC and Oracle packages.
2. Register the Oracle JDBC driver with the DriverManager.
3. Open a connection to the database by calling getConnection() and specifying driver-specific information like the URL, username, and password.
4. Create a Statement object from the Connection to execute queries.
Java 8 introduced many new features including lambda expressions for functional programming, default methods and static methods in interfaces, method references, repeating annotations, improved type inference, the Optional class, streams API for functional-style collections processing, and Base64 encoding support in the standard library. It was a major update to the Java programming language and development kit.
This presentation is motivated by the continuous growth of Scala language popularity thanks to many new concepts it offers. Therefore, it makes a perfect sense to take a further insight on this language. Beside the language itself, its ecosystem is also very important. That is why I will focus on the Scala ecosystem in this presentation.
This document provides a brief overview of Java 8 features including functional interfaces, lambda expressions, stream API, and Optional class. It discusses how functional interfaces provide target types for lambda expressions and can have a single abstract method. Lambda expressions allow implementing functional interfaces concisely without anonymous classes. The stream API provides a powerful way to process collections in a declarative way using lambda expressions. The Optional class avoids null pointer exceptions and allows chaining of method calls on objects that may be null.
This document provides an overview of Oracle's plans and projects to evolve the Java platform. It discusses Project Coin which aims to make small language improvements, Project Lambda which adds closures and other functional programming features, Project Jigsaw which develops a modularity system, and convergence of the HotSpot and JRockit JVMs. The document also mentions other projects like Project DaVinci and performance optimizations. It emphasizes that the language will evolve cautiously to maintain simplicity and compatibility while improving developer productivity. The development schedule and roadmap are not commitments and remain at Oracle's discretion.
Grokking Techtalk #38: Escape Analysis in Go compilerGrokking VN
This document discusses escape analysis in the Go compiler. It provides an overview of the Go language and compiler, including the main phases of parsing, type checking and AST transformations, SSA form, and generating machine code. It notes that the type checking phase contains several sub-phases, including escape analysis, which determines if local variables can be allocated to the stack instead of the heap. The document then delves into how escape analysis is implemented in the Go compiler.
Visual Basic .NET (VB.NET or VB .NET) is a version of Microsoft's Visual Basic that was designed, as part of the company's .NET product group, to make Web services applications easier to develop.
The document discusses obtaining a connection to a database in Java using JDBC. It provides code examples of creating a database connection using the DriverManager class and Oracle's JDBC Thin driver. The code inserts a record into an EMP table for demonstration purposes. Best practices for database connectivity in a Java project are then covered, such as using the DAO pattern to separate data access logic from business logic. This improves testability, reusability and flexibility in switching database types.
The document discusses Scala.js, a compiler that converts Scala code into JavaScript. It covers why Scala.js is useful for developing web applications in Scala instead of JavaScript, how to set up projects using SBT, popular Scala.js libraries for tasks like making RPC calls and building user interfaces, tips for interfacing Scala code with JavaScript libraries, and React integration with Scala.js.
The document discusses Front End Design Tool (FEDT) using VB.NET. It provides an introduction to VB.NET presented by Ankit Verma. The topics covered include which book to follow for VB.NET, languages, system hierarchy, what is FEDT, introduction to .NET framework, versions of .NET framework, supported applications, client-server model, .NET architecture including CLR, CTS and FCL, execution process, memory management and assemblies.
A JDBC type 2 driver converts JDBC API calls to database driver native API calls. It has a two-tier architecture and is faster than other drivers but is database dependent. A type 4 driver converts JDBC calls to database native network calls. It is platform independent, lightweight, and portable but requires implementing network protocols. A type 3 driver converts JDBC calls to database independent network calls and supports three-tier architectures and distributed transactions.
Mumbai Academics is Mumbai’s first dedicated Professional Training Center for Training with Spoke and hub model with Multiple verticles . The strong foundation of Mumbai Academics is laid by highly skilled and trained Professionals, carrying mission to provide industry level input to the freshers and highly skilled and trained Software Professionals/other professional to IT companies.
The document discusses the JDBC API and the basic steps for working with it to access a tabular datastore from a Java application. It covers:
1. The JDBC API provides an abstraction layer for Java programs to access database services via JDBC drivers.
2. The basic steps involve obtaining a database connection, executing SQL statements, and processing the results.
3. Obtaining a connection involves instantiating a Driver object, constructing a JDBC URL to identify the database, and passing this along with authentication properties to the Driver's connect method.
F# and SignalR can be used to create fast and scalable web applications. F#'s support for asynchronous and reactive programming simplifies building real-time web functionality. SignalR enables adding real-time functionality like live data updates and chat to web apps using technologies like websockets, server-sent events and long polling. The CQRS pattern also supports scalability by separating command and query operations.
The document discusses improving the Data Access Object (DAO) design pattern implementation in a project using JDBC for database connectivity. It describes how the current DAO implementation creates a new Driver object on every request, which is inefficient. It recommends using the DriverManager class instead to manage a single Driver instance and create connections. The DriverManager acts as a factory class to centralize the connection creation code and avoid multiple Driver instances, improving performance.
Java 8 includes several new features such as lambda expressions, default methods in interfaces, stream API for bulk data operations, date/time API improvements, and concurrency API enhancements. Some key additions are lambda expressions for functional-style programming, default/static methods allowing implementation code in interfaces, and the stream API providing a powerful way to process and filter collections of data.
The document discusses the .NET framework, its key components, and how it works. The .NET framework includes the Common Language Runtime (CLR) which loads and executes code. It provides a common type system and language interoperability through the Common Type System (CTS) and Common Language Specification (CLS). The framework includes class libraries and supports multiple programming languages like C# and VB.NET which compile to Microsoft Intermediate Language (MSIL) for execution by the CLR.
The document discusses JDBC (Java Database Connectivity), which provides Java applications with methods to access databases. It covers JDBC architecture and driver types, including Type 1 (JDBC-ODBC bridge), Type 2 (native API), Type 3 (network protocol), and Type 4 (pure Java) drivers. The key classes and interfaces of the JDBC API are also summarized, along with the typical steps to connect to a database using JDBC: loading a driver, connecting, executing statements, and handling exceptions.
The document describes Java Database Connectivity (JDBC), which provides Java applications with access to most database systems via SQL. It outlines the JDBC architecture and classes in the java.sql package. JDBC drivers allow applications to connect to databases without using proprietary APIs. There are four types of JDBC drivers. The document also provides an example of how to load a driver, connect to a database, execute a query, and retrieve and display results.
The document provides an overview of Windows Workflow Foundation (WWF). It discusses key concepts such as workflows, activities, the workflow runtime engine, and how to build workflows programmatically and using markup. Some key points:
- Workflows are composed of activities and define processes as an ordered execution of activities. They run within a host process and workflow runtime engine.
- Activities are the basic units of a workflow and can be simple or composite. The framework includes many predefined activities.
- The runtime engine handles workflow instance creation, state management, and execution. It can host multiple workflows concurrently.
- Workflows can be created programmatically in code or declaratively using XML markup. The markup maps to
The document discusses internal domain-specific languages (DSLs). It begins by explaining how fluent interfaces originated and their benefits. It then discusses how fluent interfaces relate to the builder pattern and how they can be used to create internal DSLs. The document provides examples of internal DSL implementations in different programming languages and outlines design guidelines and patterns for creating internal DSLs, such as using context, pure, and glue primitives. It also discusses how to implement entry and exit points and rules for contextual transitions within an internal DSL.
Tuning the HotSpot JVM Garbage Collectorslanger4711
This document discusses garbage collection algorithms in the Sun/Oracle Java Virtual Machine. It begins by outlining the objectives and agenda, which include discussing generational GC, parallel GC, concurrent GC, and the "garbage first" (G1) collector. It then provides details on each type of collector, including how generational GC exploits typical object lifetime patterns, how parallel and concurrent GC work, and the region-based approach of the G1 collector. The document aims to give an overview of different garbage collection strategies and tuning in the JVM.
Java 8 Streams & Collectors : the Leuven editionJosé Paumard
This document discusses the introduction of lambdas, streams, and collectors in Java 8. It provides a simple example to demonstrate lambdas and compares the Java 7 and Java 8 approaches to implementing the map-filter-reduce pattern on a list. In the Java 7 approach, interfaces are defined for mapper, predicate, and reducer. Anonymous inner classes implement these interfaces. The Java 8 approach uses lambda expressions to concisely express the mapper, predicate, and reducer without defining separate classes.
The document discusses garbage collection (GC) pauses in the Java Virtual Machine (JVM). It provides an overview of different GC algorithms like parallel GC, concurrent GC, and G1 GC used in HotSpot JVM. It explains reasons for long GC pauses and discusses options for tuning pause times. It also briefly mentions alternative GC implementations in other JVMs like Shenandoah and those used in Azul and JRocket VMs.
This document provides a brief overview of Java 8 features including functional interfaces, lambda expressions, stream API, and Optional class. It discusses how functional interfaces provide target types for lambda expressions and can have a single abstract method. Lambda expressions allow implementing functional interfaces concisely without anonymous classes. The stream API provides a powerful way to process collections in a declarative way using lambda expressions. The Optional class avoids null pointer exceptions and allows chaining of method calls on objects that may be null.
This document provides an overview of Oracle's plans and projects to evolve the Java platform. It discusses Project Coin which aims to make small language improvements, Project Lambda which adds closures and other functional programming features, Project Jigsaw which develops a modularity system, and convergence of the HotSpot and JRockit JVMs. The document also mentions other projects like Project DaVinci and performance optimizations. It emphasizes that the language will evolve cautiously to maintain simplicity and compatibility while improving developer productivity. The development schedule and roadmap are not commitments and remain at Oracle's discretion.
Grokking Techtalk #38: Escape Analysis in Go compilerGrokking VN
This document discusses escape analysis in the Go compiler. It provides an overview of the Go language and compiler, including the main phases of parsing, type checking and AST transformations, SSA form, and generating machine code. It notes that the type checking phase contains several sub-phases, including escape analysis, which determines if local variables can be allocated to the stack instead of the heap. The document then delves into how escape analysis is implemented in the Go compiler.
Visual Basic .NET (VB.NET or VB .NET) is a version of Microsoft's Visual Basic that was designed, as part of the company's .NET product group, to make Web services applications easier to develop.
The document discusses obtaining a connection to a database in Java using JDBC. It provides code examples of creating a database connection using the DriverManager class and Oracle's JDBC Thin driver. The code inserts a record into an EMP table for demonstration purposes. Best practices for database connectivity in a Java project are then covered, such as using the DAO pattern to separate data access logic from business logic. This improves testability, reusability and flexibility in switching database types.
The document discusses Scala.js, a compiler that converts Scala code into JavaScript. It covers why Scala.js is useful for developing web applications in Scala instead of JavaScript, how to set up projects using SBT, popular Scala.js libraries for tasks like making RPC calls and building user interfaces, tips for interfacing Scala code with JavaScript libraries, and React integration with Scala.js.
The document discusses Front End Design Tool (FEDT) using VB.NET. It provides an introduction to VB.NET presented by Ankit Verma. The topics covered include which book to follow for VB.NET, languages, system hierarchy, what is FEDT, introduction to .NET framework, versions of .NET framework, supported applications, client-server model, .NET architecture including CLR, CTS and FCL, execution process, memory management and assemblies.
A JDBC type 2 driver converts JDBC API calls to database driver native API calls. It has a two-tier architecture and is faster than other drivers but is database dependent. A type 4 driver converts JDBC calls to database native network calls. It is platform independent, lightweight, and portable but requires implementing network protocols. A type 3 driver converts JDBC calls to database independent network calls and supports three-tier architectures and distributed transactions.
Mumbai Academics is Mumbai’s first dedicated Professional Training Center for Training with Spoke and hub model with Multiple verticles . The strong foundation of Mumbai Academics is laid by highly skilled and trained Professionals, carrying mission to provide industry level input to the freshers and highly skilled and trained Software Professionals/other professional to IT companies.
The document discusses the JDBC API and the basic steps for working with it to access a tabular datastore from a Java application. It covers:
1. The JDBC API provides an abstraction layer for Java programs to access database services via JDBC drivers.
2. The basic steps involve obtaining a database connection, executing SQL statements, and processing the results.
3. Obtaining a connection involves instantiating a Driver object, constructing a JDBC URL to identify the database, and passing this along with authentication properties to the Driver's connect method.
F# and SignalR can be used to create fast and scalable web applications. F#'s support for asynchronous and reactive programming simplifies building real-time web functionality. SignalR enables adding real-time functionality like live data updates and chat to web apps using technologies like websockets, server-sent events and long polling. The CQRS pattern also supports scalability by separating command and query operations.
The document discusses improving the Data Access Object (DAO) design pattern implementation in a project using JDBC for database connectivity. It describes how the current DAO implementation creates a new Driver object on every request, which is inefficient. It recommends using the DriverManager class instead to manage a single Driver instance and create connections. The DriverManager acts as a factory class to centralize the connection creation code and avoid multiple Driver instances, improving performance.
Java 8 includes several new features such as lambda expressions, default methods in interfaces, stream API for bulk data operations, date/time API improvements, and concurrency API enhancements. Some key additions are lambda expressions for functional-style programming, default/static methods allowing implementation code in interfaces, and the stream API providing a powerful way to process and filter collections of data.
The document discusses the .NET framework, its key components, and how it works. The .NET framework includes the Common Language Runtime (CLR) which loads and executes code. It provides a common type system and language interoperability through the Common Type System (CTS) and Common Language Specification (CLS). The framework includes class libraries and supports multiple programming languages like C# and VB.NET which compile to Microsoft Intermediate Language (MSIL) for execution by the CLR.
The document discusses JDBC (Java Database Connectivity), which provides Java applications with methods to access databases. It covers JDBC architecture and driver types, including Type 1 (JDBC-ODBC bridge), Type 2 (native API), Type 3 (network protocol), and Type 4 (pure Java) drivers. The key classes and interfaces of the JDBC API are also summarized, along with the typical steps to connect to a database using JDBC: loading a driver, connecting, executing statements, and handling exceptions.
The document describes Java Database Connectivity (JDBC), which provides Java applications with access to most database systems via SQL. It outlines the JDBC architecture and classes in the java.sql package. JDBC drivers allow applications to connect to databases without using proprietary APIs. There are four types of JDBC drivers. The document also provides an example of how to load a driver, connect to a database, execute a query, and retrieve and display results.
The document provides an overview of Windows Workflow Foundation (WWF). It discusses key concepts such as workflows, activities, the workflow runtime engine, and how to build workflows programmatically and using markup. Some key points:
- Workflows are composed of activities and define processes as an ordered execution of activities. They run within a host process and workflow runtime engine.
- Activities are the basic units of a workflow and can be simple or composite. The framework includes many predefined activities.
- The runtime engine handles workflow instance creation, state management, and execution. It can host multiple workflows concurrently.
- Workflows can be created programmatically in code or declaratively using XML markup. The markup maps to
The document discusses internal domain-specific languages (DSLs). It begins by explaining how fluent interfaces originated and their benefits. It then discusses how fluent interfaces relate to the builder pattern and how they can be used to create internal DSLs. The document provides examples of internal DSL implementations in different programming languages and outlines design guidelines and patterns for creating internal DSLs, such as using context, pure, and glue primitives. It also discusses how to implement entry and exit points and rules for contextual transitions within an internal DSL.
Tuning the HotSpot JVM Garbage Collectorslanger4711
This document discusses garbage collection algorithms in the Sun/Oracle Java Virtual Machine. It begins by outlining the objectives and agenda, which include discussing generational GC, parallel GC, concurrent GC, and the "garbage first" (G1) collector. It then provides details on each type of collector, including how generational GC exploits typical object lifetime patterns, how parallel and concurrent GC work, and the region-based approach of the G1 collector. The document aims to give an overview of different garbage collection strategies and tuning in the JVM.
Java 8 Streams & Collectors : the Leuven editionJosé Paumard
This document discusses the introduction of lambdas, streams, and collectors in Java 8. It provides a simple example to demonstrate lambdas and compares the Java 7 and Java 8 approaches to implementing the map-filter-reduce pattern on a list. In the Java 7 approach, interfaces are defined for mapper, predicate, and reducer. Anonymous inner classes implement these interfaces. The Java 8 approach uses lambda expressions to concisely express the mapper, predicate, and reducer without defining separate classes.
The document discusses garbage collection (GC) pauses in the Java Virtual Machine (JVM). It provides an overview of different GC algorithms like parallel GC, concurrent GC, and G1 GC used in HotSpot JVM. It explains reasons for long GC pauses and discusses options for tuning pause times. It also briefly mentions alternative GC implementations in other JVMs like Shenandoah and those used in Azul and JRocket VMs.
Map(), flatmap() and reduce() are your new best friends: simpler collections,...Chris Richardson
This document summarizes a presentation about functional programming and how functions like map(), flatMap(), and reduce() can simplify collection processing, concurrency, and big data problems. The presentation introduces functional programming concepts and how languages like Java 8 have adopted these with features like lambda expressions and streams. It provides examples of how to use streams to map, filter, and reduce collections in a more declarative way compared to imperative for loops. It also discusses how functions and futures can help simplify concurrent operations by allowing asynchronous work to be expressed more clearly.
Lambdas and streams are key new features in Java 8. Lambdas allow blocks of code to be passed around as if they were objects. Streams provide an abstraction for processing collections of objects in a declarative way using lambdas. Optional is a new class that represents null-safe references and helps avoid null pointer exceptions. Checked exceptions can cause issues with lambdas, so helper methods are recommended to convert checked exceptions to unchecked exceptions.
(video of these slides available here http://fsharpforfunandprofit.com/fppatterns/)
In object-oriented development, we are all familiar with design patterns such as the Strategy pattern and Decorator pattern, and design principles such as SOLID.
The functional programming community has design patterns and principles as well.
This talk will provide an overview of some of these, and present some demonstrations of FP design in practice.
Project Lambda: Functional Programming Constructs in Java - Simon Ritter (Ora...jaxLondonConference
Presented at JAX London 2013
The big language features for Java SE 8 are lambda expressions (closures) and default methods (formerly called defender methods or virtual extension methods). Adding lambda expressions to the language opens up a host of new expressive opportunities for applications and libraries. You might assume that lambda expressions are simply a more syntactically compact form of inner classes, but, in fact, the implementation of lambda expressions is substantially different and builds on the invokedynamic feature added in Java SE 7.
Here are a few thoughts in response to your questions:
- Lambda expressions will significantly improve readability and reduce noise in Java code by allowing for more concise one-liners compared to anonymous inner classes. However, debugging lambdas could potentially be more challenging since they are anonymous by nature. Tools and IDE support will need to evolve to help with this.
- With features like lambdas and default methods, Java 8 aims to become more competitive with languages like C# and Scala that already have closures and functional capabilities. However, Java's large existing code base and ecosystem give it advantages over newer languages.
- For Java 8 to be widely adopted, projects should start evaluating and migrating to it as early access
Scala is a programming language that combines object-oriented and functional programming which allows developers to write more functionality with less code compared to Java. It compiles to Java bytecode and runs on the Java Virtual Machine, allowing reuse of existing Java libraries and tools. Adopting Scala can increase developer productivity and quality by reducing code size by 30-50%, shortening development time and reducing bugs.
Functional Programming With Lambdas and Streams in JDK8IndicThreads
The significant new language feature in Java SE 8 is the introduction of Lambda expressions, a way of defining and using anonymous functions. On its own this provides a great way to simplify situations where we would typically use an inner class today. However, Java SE 8 also introduces a range of new classes in the standard libraries that are designed specifically to take advantage of Lambdas. These are primarily included in two new packages: java.util.stream and java.util.function.
After a brief discussion of the syntax and use of Lambda expressions this session will focus on how to use Streams to greatly simplify the way bulk and aggregate operations are handled in Java. We will look at examples of how a more functional approach can be taken in Java using sources, intermediate operations and terminators. We will also discuss how this can lead to improvements in performance for many operations through the lazy evaluation of Streams and how code can easily be made parallel by changing the way the Stream is created.
Session at the IndicThreads.com Confence held in Pune, India on 27-28 Feb 2015
http://www.indicthreads.com
http://pune15.indicthreads.com
The document discusses new features in Java SE 8 including lambda expressions and streams. Lambda expressions allow for anonymous functions and functional programming techniques. Streams provide a way to perform aggregate operations on collections in a declarative way. Key points covered include how lambda expressions work, method references, default methods that allow interfaces to evolve, and examples of using streams to perform common collection operations like filtering, mapping, reducing and collecting results.
Cover Basic concept for Functional Programming in Java. Define new functional interfaces, lambda expressions, how to translate lambda expression, JVM deal with new byte code etc. This is not the perfect slides for functional programming, but trying cover simple basic functional programming.
This document summarizes Simon Ritter's presentation on Java 8. The presentation introduced several new features in Java 8 including lambda expressions, streams, date/time API improvements, and others. It provided examples of how to use lambda expressions and streams to concisely represent operations on collections and other data sources in a more functional style.
This document provides an overview of new features being introduced in Java 8, with a focus on lambda expressions, default methods, and bulk data operations. It discusses the syntax and usage of lambda expressions, how they are represented at runtime using functional interfaces, and how variable capturing works. New functional interfaces being added to Java 8 are presented, including examples like Consumer and Function. The document also explores how lambda expressions are compiled, showing how invokedynamic bytecode instructions are used to dispatch lambda calls at runtime. In summary, the document serves as an introduction to key new language features in Java 8 that improve support for functional programming and parallel operations.
This document provides an overview of Java 8 including:
- Java 8 has approximately 9 million developers and Oracle supports versions 6-8.
- New features include default methods, lambda expressions, streams, and parallel processing capabilities.
- JavaScript integration allows JavaScript code to be run from Java, enabling database and other connections from JavaScript.
- Potential issues with Java 8 include more complex debugging due to lambda expressions and increased abstraction.
Video and slides synchronized, mp3 and slide download available at URL http://bit.ly/1eZv11J.
Simon Ritter discusses the syntax and use of Lambda expressions, focusing on using Streams to greatly simplify the way bulk and aggregate operations are handled in Java. Filmed at qconlondon.com.
Simon Ritter is a Java Technology Evangelist at Oracle Corporation. Simon has been in the IT business since 1984 and holds a Bachelor of Science degree in Physics from Brunel University in the U.K.
This document discusses new features in JDK 8 including lambda expressions, method references, default methods in interfaces, date and time API improvements, Nashorn JavaScript engine, parameter names in reflection, and annotation improvements. It also briefly mentions JEPs and upcoming features for JDK 9 such as modularity. The presenter provides code examples and explanations for many of the new JDK 8 language and API features.
Introduction of Java 8 with emphasis on Lambda Expressions and StreamsEmiel Paasschens
Lambda expressions and streams are major new features in Java 8. Lambda expressions allow treating functionality as a method argument or variable. Streams provide a new way to process collections of objects in a declarative way using intermediate and terminal operations. The document provides examples of lambda expressions, method references, functional interfaces, default methods on interfaces, and stream operations like filter, map, and reduce.
Porting the NetBeans Java 8 Enhanced For Loop Lambda Expression Refactoring t...Raffi Khatchadourian
Java 8 is one of the largest upgrades to the popular language and framework in over a decade. However, the Eclipse IDE is missing several key refactorings that could help developers take advantage of new features in Java 8 more easily. In this paper, we discuss our ongoing work in porting the enhanced for loop to lambda expression refactoring from the NetBeans IDE to Eclipse. We also discuss future plans for new Java 8 refactorings not found in any current IDE.
The document discusses new features in Java 8 including lambda expressions, default methods in interfaces, streams API and functional interfaces. Lambda expressions allow representing anonymous functions and can be used to filter, map and process collections. Default methods allow adding new methods to interfaces without breaking existing implementations. Streams API provides a way to process data pipelines in a declarative way and supports parallel and sequential operations on collections.
The document discusses updates to the Java programming language through JSR-335, which proposes adding lambda expressions, interface evolution through default methods, and bulk parallel operations on collections. These changes aim to make Java more parallel-friendly and enable developers to write more concise code. The addition of lambda expressions and default methods can help enable more powerful library APIs and make client code more readable and less error-prone.
This document provides an overview of Java 8 lambda features such as lambda syntax, interface enhancements like default methods, converting anonymous classes to lambdas, forEach and streams, method and constructor references, and functional interfaces. It also lists several sessions at a conference that will provide more in-depth coverage of these Java 8 lambda topics and includes links to documentation and additional resources.
This was a short introduction to Scala programming language.
me and my colleague lectured these slides in Programming Language Design and Implementation course in K.N. Toosi University of Technology.
Eclipse and Java 8 - Eclipse Day India 2013Noopur Gupta
This document discusses new features in Java 8 related to lambda expressions, including functional interfaces, lambda syntax, method references, and interface improvements like default and static methods. It provides examples and explanations of how lambda expressions reduce overhead compared to anonymous classes by using invokedynamic bytecode and JRE optimizations. It also covers type annotations which allow annotations on type uses in addition to declarations to enable improved static analysis.
Aws Lambda for Java Architects CJug-Chicago 2016-08-30Derek Ashmore
This document provides an overview and agenda for a presentation on AWS Lambda for Java architects. The presentation covers:
- What AWS Lambdas are and their benefits and limitations
- Developing Lambda functions in Java, including implementing request handlers and using the execution context
- Tools for supporting Lambda functions, such as logging and third party libraries
- Using Lambdas for microservices and event-driven architectures
The agenda includes sections on the "What" and "Why" of AWS Lambda, developing Lambda functions, supporting Lambda functions, using Lambdas for microservices, and a summary with Q&A. Sample code examples are provided on the speaker's GitHub page.
Project Lambda: To Multicore and BeyondDmitry Buzdin
This document outlines Project Lambda, which aims to add closures and related features to Java SE 8 to better support programming in a multicore environment. It discusses how hardware trends are leading to parallelism and how developers need simple parallel libraries. It proposes lambda expressions and method references to make parallel programming easier by allowing internal iteration idioms instead of serial for loops. Lambda expressions allow code to be passed as data in a concise way, avoiding boilerplate. Their type is a single-abstract-method (SAM) interface. Method references further simplify code by extracting data dependencies.
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UPRAHUL
This Dissertation explores the particular circumstances of Mirzapur, a region located in the
core of India. Mirzapur, with its varied terrains and abundant biodiversity, offers an optimal
environment for investigating the changes in vegetation cover dynamics. Our study utilizes
advanced technologies such as GIS (Geographic Information Systems) and Remote sensing to
analyze the transformations that have taken place over the course of a decade.
The complex relationship between human activities and the environment has been the focus
of extensive research and worry. As the global community grapples with swift urbanization,
population expansion, and economic progress, the effects on natural ecosystems are becoming
more evident. A crucial element of this impact is the alteration of vegetation cover, which plays a
significant role in maintaining the ecological equilibrium of our planet.Land serves as the foundation for all human activities and provides the necessary materials for
these activities. As the most crucial natural resource, its utilization by humans results in different
'Land uses,' which are determined by both human activities and the physical characteristics of the
land.
The utilization of land is impacted by human needs and environmental factors. In countries
like India, rapid population growth and the emphasis on extensive resource exploitation can lead
to significant land degradation, adversely affecting the region's land cover.
Therefore, human intervention has significantly influenced land use patterns over many
centuries, evolving its structure over time and space. In the present era, these changes have
accelerated due to factors such as agriculture and urbanization. Information regarding land use and
cover is essential for various planning and management tasks related to the Earth's surface,
providing crucial environmental data for scientific, resource management, policy purposes, and
diverse human activities.
Accurate understanding of land use and cover is imperative for the development planning
of any area. Consequently, a wide range of professionals, including earth system scientists, land
and water managers, and urban planners, are interested in obtaining data on land use and cover
changes, conversion trends, and other related patterns. The spatial dimensions of land use and
cover support policymakers and scientists in making well-informed decisions, as alterations in
these patterns indicate shifts in economic and social conditions. Monitoring such changes with the
help of Advanced technologies like Remote Sensing and Geographic Information Systems is
crucial for coordinated efforts across different administrative levels. Advanced technologies like
Remote Sensing and Geographic Information Systems
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Changes in vegetation cover refer to variations in the distribution, composition, and overall
structure of plant communities across different temporal and spatial scales. These changes can
occur natural.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
How to Manage Your Lost Opportunities in Odoo 17 CRMCeline George
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.