Java practice questions UPDATED ACTUAL Exam Questions and CORRECT Answers

Java practice questions UPDATED ACTUAL Exam Questions and
CORRECT Answers


The JDK command to compile a class in the file Test.java is - javac Test.java


Which JDK command is correct to run a Java application in ByteCode.class? - java
ByteCode.class


Java compiler translates Java source code into ____ - A. Java bytecode


_____ is a software that interprets Java bytecode - Java virtual machine



Suppose you define a Java class as follows:



public class Test {


}



In order to compile this program, the source code should be stored in a file named - Test.java



The extension name of a Java bytecode file is - .class


The extension name of a Java source code file is - .java



Which of the following lines is not a Java comment?


A. /** comments */

, B. // comments

C. -- comments

D. /* comments */

E. ** comments ** - -- comments
** comments **



the following are the reserved words: - A. public

B. static

C. void

D. class



Every statement in Java ends with ___ - a semicolon (;)


A block is enclosed inside __________. - braces



The __________ method displays a message dialog box -
JOptionPane.showMessageDialog(null, "Welcome to Java!", "Example 1.2 Output",
JOptionPane.INFORMATION_MESSAGE);



JOptionPane.showMessageDialog(null, "Welcome to Java!");


To use JOptionPane in your program, you may import it using: - import
javax.swing.JOptionPane;



import javax.swing.*;


Programming style is important, because __________ - good programming style makes a
program more readable