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Java Objective Questions (MCQs) - 225

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Question: 221

Note:- A Java thread exists in several states - New, Running, Suspended, Blocked & Terminated.

Level: Beginner Category: multithreading
[Posted by: Admin | Chicago, USA]

Question: 222

Note: final static variables can't be modified once initialized and can be accessed outside of the class without creating object. Here is an example :-

public class JavaExample{
   public final static int DELAY = 5;
}

public class Main
{
public static void main(String[] args) {
    System.out.println(JavaExample.DELAY);
}
}

Level: Beginner Category: variables
[Posted by: Admin | Chicago, USA]

Question: 223

Note: You can create your own exceptions by extending RuntimeException class. Here is an example:-

public class MyException extends RuntimeException{
	
	public MyException(String message){
		super(message);
	}

}

//Example to use this exception 
throw new MyException("Any error message");

Level: Beginner Category: exceptions
[Posted by: Admin | Chicago, USA]

Question: 224

Note: Apache PDFBox is an open source pure-Java library that can be used to create, render, print, split, merge, alter, verify and extract text and meta-data of PDF files.

Level: Beginner Category: other
[Posted by: Admin | Chicago, USA]

Question: 225

What is the output of the program?
public class Main{
public static void main(String[] args){
int j;
System.out.println(j);
}
}

(A) 0
(B) Garbage Value
(C) Compiler Error
(D) Runtime Error

Level: Beginner Category: datatype
[Posted by: Jagroop Singh | India]

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Java Objective Questions (MCQs) - 225

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