This document discusses several key concepts in Java including the this keyword, static keyword, super keyword, final keyword, and preventing method overriding and inheritance. It provides examples to illustrate each concept. The this keyword refers to the current object and is used to differentiate between class attributes and method parameters. The static keyword allows accessing class members without creating an object and is used for static variables and methods. The super keyword is used to call superclass constructors and access superclass variables. The final keyword is used to declare constants and prevent method overriding or inheritance.
Object- objects have states and behaviors. Example: A dog has states-color, name, breed , as well as behaviors – barking, eating. An object is an instance of a class.
Class- A class can be defined as a template/blue print that describe the behavior/states that object of its type support.
Object- objects have states and behaviors. Example: A dog has states-color, name, breed , as well as behaviors – barking, eating. An object is an instance of a class.
Class- A class can be defined as a template/blue print that describe the behavior/states that object of its type support.
Implementation details and performance traits of generics in .NET, Java and C++. Presentation for the Jerusalem .NET/C++ User Group by Sasha Goldshtein.
To learn about the basic concepts of Object Oriented Programming and Inheritance plus different Inheritance Models and interview questions will be covered.
Implementation details and performance traits of generics in .NET, Java and C++. Presentation for the Jerusalem .NET/C++ User Group by Sasha Goldshtein.
To learn about the basic concepts of Object Oriented Programming and Inheritance plus different Inheritance Models and interview questions will be covered.
Top 10 things a fresh programmer should know - Dao Ngoc KhanhDevDay.org
This session, targeted at newly graduates and students, shares some tips on how we can prepare a good foundation for a software career.
Topic present by Dao Ngoc Khanh - Developer at Axon Active Vietnam - at DevDay Da Nang 2015
It's easy to look at where you are and where you want to be and think, “I’ll never get there” and plateau with your current skill set.
Maybe you’re a developer who is looking to level up their career. Maybe you’re someone who wants to break into a development career for the first time.
Wherever you’re at, I want to teach you the same methods I use every single day to keep my skills sharp and to keep myself connected to interesting and rewarding projects and relationships.
java question Fill the add statement areaProject is to wo.pdfdbrienmhompsonkath75
java question: \"Fill the add statement area\"
Project is to work with stacks.
package p2;
public class Coordinate {
public int x;
public int y;
public Coordinate( int x, int y ) {
this.x = x;
this.y = y;
}
public String toString() {
return \"(\" + this.x + \",\" + this.y + \")\";
}
@Override
public boolean equals( Object object ) {
if( object == null ) {
return false;
}
if( ! Coordinate.class.isAssignableFrom( object.getClass() )) {
return false;
}
final Coordinate other = (Coordinate) object;
return this.x == other.x && this.y == other.y;
}
}
package p2;
public class Coordinate {
public int x;
public int y;
public Coordinate( int x, int y ) {
this.x = x;
this.y = y;
}
public String toString() {
return \"(\" + this.x + \",\" + this.y + \")\";
}
@Override
public boolean equals( Object object ) {
if( object == null ) {
return false;
}
if( ! Coordinate.class.isAssignableFrom( object.getClass() )) {
return false;
}
final Coordinate other = (Coordinate) object;
return this.x == other.x && this.y == other.y;
}
}
package p2;
import java.util.Vector;
public class Maze {
private char[][] maze;
private int height;
private int width;
/**
* Create a new Maze of the specified height and width, initializing every
* location as empty, with a \' \'.
**/
public Maze( int width, int height ) {
// ADD STATEMENTS HERE
}
/**
* Mutator to allow us to set the specified Coordinate as blocked,
* marking it with a \'X\'
**/
public void setBlocked( Coordinate coord ) {
// ADD STATEMENTS HERE
}
/**
* Mutator to allow us to set the specified Coordinate as having been visited,
* marking it with a \'*\'
**/
public void setVisited( Coordinate coord ) {
// ADD STATEMENTS HERE
}
/**
* Mutator to allow us to set the specified Coordinate as part of the path solution,
* marking it with a \'.\'
**/
public void setPath( Coordinate coord ) {
// ADD STATEMENTS HERE
}
/**
* Returns the character at the locatio specified by the Coordinate
**/
public char at( Coordinate coord ) {
// ADD STATEMENTS HERE
}
/**
* Returns a Coordinate array containing all Coordinates that are clear around
* the specified coordinate.
**/
public Coordinate[] clearAround( Coordinate coord ) {
Vector vector = new Vector();
// ADD STATEMENTS HERE
// Look at each of the locations around the specified Coordinate, and add it
// to the vector if it is clear (i.e. a space)
return vector.toArray( new Coordinate[0] );
}
/**
* Returns a Coordinate that provides the entrance location in this maze.
**/
public Coordinate start() {
return new Coordinate( 0, 1 );
}
/**
* Returns a Coordinate that provides the exit location from this maze.
**/
public Coordinate end() {
// ADD STATEMENTS HERE
}
/**
* The toString() method is responsible for creating a String representation
* of the Maze. See the project specification for sample output. Note that
* the String representation adds numbers across the top and side of the Maze
* to show the Coordinates of each cell in the maze.
**/
public String toString() {
StringBuilder buffer =.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
3. *It is refer to the object that is currently executed.
*It initializes the value of a variable
*Syntax = this.variable name;
4. *Example
* class xyz
* { int x;
* int y;
* xyz(int x, int y)
* {
* //if instance variable & parameter variable are different than no need of this keyword.
* this.x=x;
* this.y=y;
* }
* }
* class demo
* { public static void main(String args[])
* {
* xyz ob = new xyz(1,2);
* System.out.println(ob.x);
* System.out.println(ob.y);
*
* }
* }
* Output: 1
* 2
5. *Normally any of the class members can be accessed by using
object of its class, but it is possible to create a member that
can be used by itself without reference to a specific instance.
*It is possible by a static keyword.
*You can declare both method and variable to be static.
*If methods are declared static then
They can call other static methods.
They must only access static data.
They cannot refer to this or super keyword in any way.
*It provides static block.
7. *class demo
*{
* public static void main(String args[])
* {
* // static methods are directly called
without object
*
* printAll(5);
* }
*}
*Output: N = 5
* A = 10
* Static block executed
* B = 20
8. *Example – 2
* class teststatic
* {
* static int a = 10;
* static int b = 20;
* // static variables
* static void printA()
* {
* System.out.println("A = "+a);
* }
* }
* class staticinotherclass
* {
* public static void main(String args[])
* {
* // static methods are directly called without object
*
* teststatic.printA();
* System.out.println("B from other class = "+teststatic.b);
* }
* }
* Output: A = 10
* B from other class = 20
9. *
*Sometime we may wish to use superclass constructor
as they were implemented or we may wish to refer
super class variable into subclass where variables
with the same name as in superclass exists then java
provides a keyword super to solve above difficulties.
*You may use super keyword for
To call superclass constructor into a subclass
To refer superclass variable
10. * Example: To call superclass constructor into a subclass
* class box
* {
* int width,height,depth;
* // used when no parameter given
* box()
* {
* width=height=depth=10;
* }
* box(int a)
* {
* width=height=depth=a;
* }
* box(int w, int h, int d)
* {
* width=w;
* height=h;
* depth=d;
* }
* int volumeofbox
* {
* return(width*depth*height);
* }
* }
11. *class boxprise extends box
*{
* int prise;
* boxprise(int w, int h, int d, int p)
* {
* super(w,h,d);
* prise = p;
* }
*}
12. *class demo
*{
* public static void main(String args[])
* {
* box b1 = new box();
* System.out.println("Box1 volume is = "+(b1.volumeofbox));
* box b2 = new box(20);
* System.out.println("Box2 volume is = "+(b2.volumeofbox));
* boxprise b3 = new boxprise(3,4,5,600);
* System.out.println("Price of box is = "+(b3.priseofbox));
* System.out.println("Box3 volume is = "+(b3.volumeofbox));
* }
*
*}
*Output: Box1 volume is = 1000
Box2 volume is = 6000
Price of box is = 600
Box3 volume is = 60
*When we use super to call superclass constructor then super(); must be in
the first line of subclass.
13. * Example: To refer superclass variable
* class A
* {
* int a;
* }
* class B extends A
* {
* int a; int b;
* B(int x, int y, int z)
* {
* super.a=x;
* // assigns value to a variable of super class
* a=y;
* b=z;
* }
* void displayAll()
* {
* System.out.println("super.a =", +super.a );
* // access variable of super class in sub class
* System.out.println("A = ",+a);
* System.out.println("B = ",+b);
* }
* }
14. * class demo
* {
* public static void main(String args[])
* {
* B b1 = new B(10,20,30);
* b1.displayAll();
* }
* }
* Output: super.a = 10
* A = 20
* B = 30
15. *
To declared as constant
*Whenever you want to declare any variable whose
value cannot be changed at any time then you can do
this by declaring that variable as final.
*Using final you can define constant in java program
*Syntax = final datatype variablename = value;
*Example = final float PI = 3.14;
*Generally variable declared as final which are written
in uppercase.
16. *To prevent method overriding
* Write the final precede the method than it cannot be overridden.
* Method declared as final cannot be declared as an abstract method because it cannot be
overridden.
*Example:
* class xyz
* {
* final void printmessage()
* {
* System.out.println("hello");
* }
* }
* class B extends xyz
* {
* final void printmessage()
* {
* // error in the following line because method declared as final cannot be override
* System.out.println("hello");
* }
* }
*
17. *To prevent inheritance
*To do this write final precede the class declaration than it cannot
be inherited.
*Declaring class as final, indirectly declared all of its method as
final too.
*It is illegal to declare a class as both abstract and final.
*Example:
*final class A
*{
*}
*class B extends A // illegal
*{
*}
*A final class must full defined its methods with complete definition
because they are directly final and final method cannot be
redefine.