Java Programming: Hello World Analysis
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Questions and Answers

What is the first line of a Java program typically used for?

  • Defining the execution instructions
  • Defining the main method
  • Defining the class accessibility
  • Defining the class name (correct)

    • What does every opening curly bracket in a Java class have to have?

  • A comment
  • A variable declaration
  • A method name
  • An associated closing bracket (correct)

    • What does the 'main' method in a Java program signify?

  • The definition of a new class
  • The starting point of program execution (correct)
  • The closing point of the program
  • The declaration of a variable

    • What does the 'public' keyword in the main method indicate?

    <p>Accessibility from the outside</p> Signup and view all the answers

    What is the convention for naming a Java class?

    <p>Start with a capital letter</p> Signup and view all the answers

    What does every Java program need to contain?

    <p>A collection of programming instructions</p> Signup and view all the answers

    What is a sequence of characters enclosed in double quotes known as?

    <p>String</p> Signup and view all the answers

    What is the purpose of using System.out.println ("Hello"); System.out.println ("World"); in Java?

    <p>It will display Hello and then World on separate lines</p> Signup and view all the answers

    What error is detected by the compiler in Java?

    <p>Syntax error</p> Signup and view all the answers

    What is the purpose of using System.out.print ("Hello"); System.out.print ("World"); in Java?

    <p>It will display Hello World on the same line</p> Signup and view all the answers

    What should be included at the end of every instruction written in Java to indicate that it is a statement?

    <p>;</p> Signup and view all the answers

    What is the purpose of comments in Java?

    <p>They convey information concerning the code and are ignored by the compiler</p> Signup and view all the answers

    What should be placed beside a method name to indicate that it is a method in Java?

    <p>()</p> Signup and view all the answers

    What type of error causes a program to perform an action that the programmer did not intend?

    <p>Logic error</p> Signup and view all the answers

    What is the purpose of using // in Java?

    <p>To indicate a multi-line comment</p> Signup and view all the answers

    What is the file extension for saving programs in Java?

    <p>.java</p> Signup and view all the answers

    What must match the class name when saving a program in Java?

    <p>Code file name</p> Signup and view all the answers

    What is the first instruction of a program in Java?

    <p>The main method itself</p> Signup and view all the answers

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