Java Programming: Hello World Analysis
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Questions and Answers

What does the first line 'public class Hello' indicate in a Java program?

  • It denotes the beginning of the program execution
  • It defines the name of the class as 'Hello' (correct)
  • It marks the end of the program
  • It specifies the main method of the program

    • What is the purpose of enclosing everything within curly brackets in a Java class?

  • To indicate the beginning and end of the program
  • To specify the accessibility of the program
  • To define the main method
  • To contain the class members and methods (correct)

    • What is the significance of having a method called 'main' in a Java application?

  • It contains a collection of programming instructions for a specific task
  • It specifies the accessibility of the application
  • It indicates the end of execution of the program
  • It marks the beginning of program execution (correct)

    • What does 'public' signify in the method 'public static void main'?

    <p>It denotes that the method is available from outside</p> Signup and view all the answers

    Why is it essential for every class name in Java to start with a capital letter?

    <p>To ensure consistency and follow convention</p> Signup and view all the answers

    What does a Java application consist of?

    <p>A single class with only one method</p> Signup and view all the answers

    What is the purpose of the semi-colon at the end of a Java instruction?

    <p>To indicate that it is a statement</p> Signup and view all the answers

    What is the effect of using the 'println' statement compared to 'print' in Java?

    <p>Prints the text with a new line</p> Signup and view all the answers

    What type of error is detected by the compiler in Java?

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

    What does a sequence of characters enclosed in double quotes represent in Java?

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

    What symbol is used to write one-line comments in Java?

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

    What is the purpose of using 'System.out.print' in Java?

    <p>To display text on the screen</p> Signup and view all the answers

    What is the purpose of methods in Java?

    <p>To perform tasks and return information</p> Signup and view all the answers

    What must the code file name be when saving programs in Java?

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

    What is the purpose of using 'System.out.println' instead of 'System.out.print' in Java?

    <p>To start a new line after displaying text</p> Signup and view all the answers

    What do comments convey in a program?

    <p>Information about filenames and titles</p> Signup and view all the answers

    What extension should be used for saving a program as a Java program?

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

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