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?

    <p>To terminate an application</p> Signup and view all the answers

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

    <p>It is automatically imported in every Java program</p> Signup and view all the answers

    What is the purpose of null in the showMessageDialog method?

    <p>To specify the parent component of the dialog box</p> Signup and view all the answers

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

    <p>To display a graphical user interface for input and output</p> Signup and view all the answers

    What is the main method in Java responsible for?

    <p>Beginning the execution of a Java application</p> Signup and view all the answers

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

    <p>To convert a string to an integer</p> Signup and view all the answers

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

    <p>To read a string input from the user</p> Signup and view all the answers

    What is the import statement used for in Java?

    <p>To import a package or class</p> Signup and view all the answers

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

    <p>To perform addition operations</p> Signup and view all the answers

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

    <p>Its design to be safe and portable</p> Signup and view all the answers

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

    <p>To provide a compiler for Java programming</p> Signup and view all the answers

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

    <p>C:\Program Files\Java\jdk1.6.0</p> Signup and view all the answers

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

    <p>To ensure bytecodes do not violate security requirements</p> Signup and view all the answers

    What are the five phases that a Java program undergoes?

    <p>Edit, Compile, Load, Verify, Execute</p> Signup and view all the answers

    What is a characteristic of a Java system?

    <p>Consists of environment, language APIs, and class libraries</p> Signup and view all the answers

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