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Java Chapter 1: Introduction to Object Oriented Programming

18 Questions

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Java Chapter 1: Introduction to Object Oriented Programming

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Questions and Answers

What type of method is showMessageDialog in the JOptionPane class?

Static method (correct)

Abstract method

Instance method

Interface method

What is the purpose of the import statement in Java?

To create a new object

To identify and locate classes used in Java programs (correct)

To define a new class

To throw an exception

What are the two groups of packages in the Java API?

Public and private packages

Core and extension packages (correct)

Instance and static packages

Abstract and interface packages

What is the purpose of the System.exit method in Java?

To terminate an application Signup and view all the answers

What is the function of the java.lang package in Java?

It is automatically imported in every Java program Signup and view all the answers

What is the purpose of null in the showMessageDialog method?

To specify the parent component of the dialog box Signup and view all the answers

What is the purpose of the javax.swing.JOptionPane class in Java?

To display a graphical user interface for input and output Signup and view all the answers

What is the main method in Java responsible for?

Beginning the execution of a Java application Signup and view all the answers

What is the purpose of the Integer.parseInt() method in Java?

To convert a string to an integer Signup and view all the answers

What is the purpose of the showInputDialog() method in Java?

To read a string input from the user Signup and view all the answers

What is the import statement used for in Java?

To import a package or class Signup and view all the answers

What is the purpose of the Addition class in the given code?

To perform addition operations Signup and view all the answers

What is a significant feature of Java that makes it a safer programming language?

Its design to be safe and portable Signup and view all the answers

What is the primary purpose of the Java Development Kit (JDK)?

To provide a compiler for Java programming Signup and view all the answers

What is the name of the directory where the JDK is installed by default?

C:\Program Files\Java\jdk1.6.0 Signup and view all the answers

What is the role of the verifier in a Java environment?

To ensure bytecodes do not violate security requirements Signup and view all the answers

What are the five phases that a Java program undergoes?

Edit, Compile, Load, Verify, Execute Signup and view all the answers

What is a characteristic of a Java system?

Consists of environment, language APIs, and class libraries Signup and view all the answers