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Setting Path Variable and Compiling Java Programs

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Setting Path Variable and Compiling Java Programs

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Questions and Answers

What is the purpose of comments in a Java program?

To mark the beginning and end of a class
To execute the program
To specify the file extension
To provide information to other programmers (correct)

What must be the name of the Java file for a class named FirstProgram?

FirstProgram.class
Program.java
MainClass.java
FirstProgram.java (correct)

Which method must every Java application contain?

mainMethod (correct)
startMethod
firstMethod
executeProgram

How are single-line comments indicated in Java?

// (C) Signup and view all the answers

What do curly braces {} denote in a Java program?

Beginning and end of a class (D) Signup and view all the answers

Which element represents a sequence of characters in Java?

Strings (D) Signup and view all the answers

What is the first step to download JDK?

Open an internet browser (A) Signup and view all the answers

What does JDK stand for?

Java Development Kit (D) Signup and view all the answers

Where can you find the Java SE downloads page?

<a href="http://www.oracle.com/technetwork/java/javase/downloads/index.html">http://www.oracle.com/technetwork/java/javase/downloads/index.html</a> (C) Signup and view all the answers

What do you need to do after downloading the JDK file?

Set the Path variable (A) Signup and view all the answers

Where can you find the JDK folder after installation?

C:\Program Files\Java\jdk1.8.0_25 (D) Signup and view all the answers

Which environment variable needs to be edited to set the Path variable?

$PATH (A) Signup and view all the answers

What is the purpose of setting the Path variable in Java installation?

To define the location of the Java compiler and other executables (C) Signup and view all the answers

What is the next step after creating a source file for a Java program?

Compile the source file to generate the executable program (B) Signup and view all the answers

Why is it important to pay attention to the case when typing a Java program?

The program will not compile if cases are not correct (B) Signup and view all the answers

Which command would you use to run a compiled Java program named 'FirstProgram'?

java FirstProgram (A) Signup and view all the answers

Where should you save your Java source file 'FirstProgram.java' according to the instructions?

In a folder named 'java' in the C drive (B) Signup and view all the answers

What is the purpose of typing 'javac FirstProgram.java' in Command Prompt?

To compile the Java source code file (A) Signup and view all the answers