The document contains 15 multiple choice questions about inheritance in Java. Some key points covered include:
- Overriding vs overloading methods
- Access modifiers for methods in subclasses
- Calling superclass constructors and methods from subclasses
- Runtime polymorphism through inheritance
- Abstract methods and overriding rules
- Accessing subclass fields from superclass references
Oracle Certified Associate (OCA) Java SE 8 Programmer II (1Z0-809) - Practice...Udayan Khattry
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Assess your preparation with these Practice Test Questions with Explanation. Questions are Extracted from Highest Rated Course on Udemy which has helped a lot of students to pass the exam with good score.
500+ multiple choice questions with explanation to assess Oracle Certified Associate, Java SE 8 Programmer II preparation.
Highest Rated course on UDEMY
Read the students success stories at:
https://udayankhattry.com/ocp/
Enroll now to receive maximum discount on the course ie. for just $9.99 or â‚ą640.00, click the link below- https://www.udemy.com/java-ocp/?couponCode=UDAYANKHATTRY.COM
To avail maximum discount on all courses visit: www.udayankhattry.com
In this chapter we will discuss exceptions in the object-oriented programming and in Java in particular. We will learn how to handle exceptions using the try-catch construct, how to pass them to the calling methods and how to throw standard or our own exceptions using the throw construct.
Oracle Certified Associate (OCA) Java SE 8 Programmer II (1Z0-809) - Practice...Udayan Khattry
Â
Assess your preparation with these Practice Test Questions with Explanation. Questions are Extracted from Highest Rated Course on Udemy which has helped a lot of students to pass the exam with good score.
500+ multiple choice questions with explanation to assess Oracle Certified Associate, Java SE 8 Programmer II preparation.
Highest Rated course on UDEMY
Read the students success stories at:
https://udayankhattry.com/ocp/
Enroll now to receive maximum discount on the course ie. for just $9.99 or â‚ą640.00, click the link below- https://www.udemy.com/java-ocp/?couponCode=UDAYANKHATTRY.COM
To avail maximum discount on all courses visit: www.udayankhattry.com
In this chapter we will discuss exceptions in the object-oriented programming and in Java in particular. We will learn how to handle exceptions using the try-catch construct, how to pass them to the calling methods and how to throw standard or our own exceptions using the throw construct.
TDD, BDD, ATDD are all methodologies that enable incremental design that is suitable for Agile environments. It seems that every day a new xDD methodology is born with the promise to be better than what came before. Should you use behaviour-driven tests or plain old unit tests? Which methodology is better? And how exactly would it benefit the development life cycle?
In this session, Dror will help to sort out the various methodologies – explaining where they came from, the tools they use, and discussing how and when to use each one. Here we will once and for all answer the question as to whether or not there’s one “DD” to rule them all.
SoCal Code Camp 2015: An introduction to Java 8Chaitanya Ganoo
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Java 8 introduced cool new features such as Lambdas and Streams. We'll take a look at what they are how to use them effectively. We'll also walkthrough an example of a lightweight Java 8 service running in AWS cloud, which can read and index tweets into an ElasticSearch cluster
In this chapter we will discuss exceptions in the object-oriented programming and in C# in particular. We will learn how to handle exceptions using the try-catch construct, how to pass them to the calling methods and how to throw standard or our own exceptions using the throw construct. We will give various examples for using exceptions. We will look at the types of exceptions and the exceptions hierarchy in the .NET Framework. At the end, we will look at the advantages of using exceptions, best practices and how to apply them in different situations.
Here we are going to learn why is a good practice to use interfaces and how they are different from abstraction classes. Further more we are going to see how which one of them to use.
TDD, BDD, ATDD are all methodologies that enable incremental design that is suitable for Agile environments. It seems that every day a new xDD methodology is born with the promise to be better than what came before. Should you use behaviour-driven tests or plain old unit tests? Which methodology is better? And how exactly would it benefit the development life cycle?
In this session, Dror will help to sort out the various methodologies – explaining where they came from, the tools they use, and discussing how and when to use each one. Here we will once and for all answer the question as to whether or not there’s one “DD” to rule them all.
SoCal Code Camp 2015: An introduction to Java 8Chaitanya Ganoo
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Java 8 introduced cool new features such as Lambdas and Streams. We'll take a look at what they are how to use them effectively. We'll also walkthrough an example of a lightweight Java 8 service running in AWS cloud, which can read and index tweets into an ElasticSearch cluster
In this chapter we will discuss exceptions in the object-oriented programming and in C# in particular. We will learn how to handle exceptions using the try-catch construct, how to pass them to the calling methods and how to throw standard or our own exceptions using the throw construct. We will give various examples for using exceptions. We will look at the types of exceptions and the exceptions hierarchy in the .NET Framework. At the end, we will look at the advantages of using exceptions, best practices and how to apply them in different situations.
Here we are going to learn why is a good practice to use interfaces and how they are different from abstraction classes. Further more we are going to see how which one of them to use.
Inheritence, Terminology, Inheritance in java, The class called Object, Super keyword, Example, Method Overriding, Method Overriding example, Abstract Class, Abstract Class Number and the Java Wrapper Classes, Final Method and Classes, Multiple Inheritance
Superclasses, and Subclasses, Overriding and Hiding Methods, Polymorphism, Inheritance Hierarchies, Super keyword, Final Classes and Methods, Abstract,
Classes and Methods, Nested classes & Inner Classes,
finalization and garbage collection.
Q3 GIVEN THE TREND EQUATION NO OF STUDENTS-3000+200 YEAR BASE: 2003-0
1.INTERPRET EQUATION RESULTS 2.FORECAST FOR 2020 3.WHEN WILL THE NO OF
STUDENTS REACH 6000
Solution
x no of years from 2003 y no of students y = 3000+200x 1) The regression
equation has a positive slope of 200 y intercept is 3000 i.e. no of students in the year 2000
Thus for every year 200 students increase 2) For 2020, x = 17, y = 3000+200(17) = 6400
3) When y =6000, 6000 = 3000+200x or x = 15 Hence in year 2018 students reach 6000
B Regression C D. All the above.
OCJP Samples Questions: Exceptions and assertionsHari kiran G
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Are you a Java enthusiast and preparing for Java 8 certification exam (OCP Java SE 8)? Try out this Quiz on Exceptions and Assertions
This quiz has answers with detailed explanation.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
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Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
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Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
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Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
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Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
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As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
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91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
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Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
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Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
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Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
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Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
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I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
2. Q1 .Consider the following code:
class Base
{
private float f = 1.0f;
protected void setF(float f1){ this.f = f1; }
}
class Base2 extends Base
{
private float f = 2.0f;
//1
}
Which of the following options is a valid example of overriding?
Select 2 correct options
a protected void setF(float f1){ this.f = 2*f1; }
b public void setF(double f1){ this.f = (float) 2*f1; }
c public void setF(float f1){ this.f = 2*f1; }
d private void setF(float f1){ this.f = 2*f1; }
e float setF(float f1){ this.f = 2*f1; return f;}
Ans: a,c
3. Q2
You are modeling a class hierarchy for living things.
You have a class LivingThing which has an abstract method reproduce().
Now, you want to have 2 subclasses of LivingThing, Plant and Animal.
Obviously, both do reproduce but the mechanisms are different.
What would you do?
Select 1 correct option.
a Overload the reproduce method in Plant and Animal Clases
b Overload the reproduce method in LivingThing Class.
c Override the reproduce method in Plant and Animal Clases
d Either overload or override, it depends on the taste of the designer.
Ans: c
4. Q3
An abstract method cannot be overridden.
Select 1 correct option.
a True
b False
Ans: b
5. Q4
What will be printed when the following program is compiled and run?
class Super
{
public int getNumber( int a)
{
return 2;
}
}
public class SubClass extends Super
{
public int getNumber( int a, char ch)
{
return 4;
}
public static void main(String[] args)
{
System.out.println( new SubClass().getNumber(4) );
}
}
Select 1 correct option.
a 4
b 2
c It will not compile.
d It will throw an exception at runtime.
e None of the above.
Ans:b
6. Q5
Consider the contents of following two files:
//File A.java
package a;
public class A
{
A(){ }
public void print(){ System.out.println("A"); }
}
//File B.java
package b;
import a.*;
public class B extends A
{
B(){ }
public void print(){ System.out.println("B"); }
public static void main(String[] args)
{
new B();
}
}
What will be printed when you try to compile and run class B?
Select 1 correct option.
a It will print A.
b It will print B.
c It will not compile.
d It will compile but will not run.
e None of the above.
Ans:c
7. Q6
Consider the following code:
class Super
{
static{ System.out.print("super "); }
}
class One
{
static { System.out.print("one "); }
}
class Two extends Super
{
static { System.out.print("two "); }
}
class Test
{
public static void main(String[] args)
{
One o = null;
Two t = new Two();
}
}
What will be the output when class Test is run ?
Select 1 correct option.
a It will print one, super and two.
b It will print one, two and super.
c It will print super and two.
d It will print two and super
e None of the above.
Ans:c
8. Q7 What will the following code print when compiled and run?
class Base
{
void methodA()
{
System.out.println("base - MethodA");
}
}
class Sub extends Base
{
public void methodA()
{
System.out.println("sub - MethodA");
}
public void methodB()
{
System.out.println("sub - MethodB");
}
public static void main(String args[])
{
Base b=new Sub(); //1
b.methodA(); //2
b.methodB(); //3
}
}
Select 1 correct option.
a sub - MethodA , sub - MethodB
b base - MethodA , sub - MethodB
c Compile time error at //1
d Compile time error at //2
e Compile time error at //3 Ans: e
9. Q8
What will the following program print when run?
// Filename: TestClass.java
public class TestClass
{
public static void main(String args[] ){ A b = new B("good bye"); }
}
class A
{
A() { this("hello", " world"); }
A(String s) { System.out.println(s); }
A(String s1, String s2){ this(s1 + s2); }
}
class B extends A
{
B(){ super("good bye"); };
B(String s){ super(s, " world "); }
B(String s1, String s2){ this(s1 + s2 + " ! "); }
}
Select 1 correct option.
a It will print "good bye".
b It will print "hello world".
c It will print "good bye world".
d It will print "good bye" followed by "hello world".
e It will print "hello world" followed by "good bye". Ans: c
10. Q9
Which of the following access control keywords can be used to enable all the
subclasses to access a method defined in the base class?
Select 2 correct options
a public
b private
c protected
d No keyword is needed.
Ans:a,c
11. Q10
Consider the following class...
class MyString extends String
{
MyString(){ super(); }
}
The above code will not compile.
Select 1 correct option.
a True
b False
Ans:a
12. Q11
Which of the following method definitions will prevent overriding of that method?
Select 4 correct options
a public final void method m1()
b public static void method m1()
c public static final void method m1()
d public abstract void method m1()
e private void method m1()
Ans:a,b,c,e
13. Q12
Given the following classes, what will be the output of compiling and running the class
Truck?
class Automobile
{
public void drive() { System.out.println("Automobile: drive"); }
}
public class Truck extends Automobile
{
public void drive() { System.out.println("Truck: drive"); }
public static void main (String args [ ])
{
Automobile a = new Automobile();
Truck t = new Truck();
a.drive(); //1
t.drive(); //2
a = t; //3
a.drive(); //4
}
}
Select 1 correct option.
a Compiler error at line 3.
b Runtime error at line 3.
c It will print: Automobile: drive, Truck: drive, Automobile: drive, in that order.
d It will print: Automobile: drive, Truck: drive, Truck: drive, in that order.
e It will print: Automobile: drive, Automobile: drive, Automobile: drive, in that order.
Ans:d
14. Q13
What will be the result of attempting to compile and run the following program?
public class TestClass
{
public static void main(String args[ ] )
{
A o1 = new C( );
B o2 = (B) o1;
System.out.println(o1.m1( ) );
System.out.println(o2.i );
}
}
class A { int i = 10; int m1( ) { return i; } }
class B extends A {at int i = 20; int m1() { return i; } }
class C extends B { int i = 30; int m1() { return i; } }
Select 1 correct option.
a The progarm will fail to compile.
b Class cast exception runtime.
c It will print 30, 20.
d It will print 30, 30.
e It will print 20, 20. Ans: c
15. Q14
Consider the following code:
class A
{
A() { print(); }
void print() { System.out.println("A"); }
}
class B extends A
{
int i = Math.round(3.5f);
public static void main(String[] args)
{
A a = new B();
a.print();
}
void print() { System.out.println(i); }
}
What will be the output when class B is run ?
Select 1 correct option.
a It will print A, 4.
b It will print A, A
c It will print 0, 4
d It will print 4, 4
e None of the above. Ans: c
16. Q15
What will the following program print when run?
class Super
{
public String toString()
{
return "4";
}
}
public class SubClass extends Super
{
public String toString()
{
return super.toString()+"3";
}
public static void main(String[] args)
{
System.out.println( new SubClass() );
}
}
Select 1 correct option.
a 43
b 7
c It will not compile.
d It will throw an exception at runtime.
e None of the above. Ans: a