Top V Coffee Primary Method Interview Questions Alongside Answers

The main() method inward Java is starting betoken of whatever standalone nub Java application. JVM starts executing Java plan from primary method in addition to the thread which executes primary is called primary thread inward Java. The primary method is equally good an of import theme inward Java interviews for two to three years experienced developer. In this Java article, nosotros volition a duet of questions related to the primary method inward Java. Apart from Why primary is static inward Java, I come across next questions proceed coming related to the primary method:

1. Can nosotros overload the primary method inward Java? Which primary method JVM volition call?
2. Can nosotros override the primary method inward Java?
3. Can nosotros brand primary in conclusion inward Java?
4. Can nosotros brand primary synchronized inward Java?
5. How to telephone telephone a nonstatic method from primary inward Java?

5 Main Method Interview Questions amongst Answers

Can nosotros overload primary inward Java?

Yes you lot tin overload the primary method inward Java, cipher incorrect amongst this but Java volition precisely telephone telephone your specific primary method, i.e. primary method amongst the next signature:

public static void main(String[] args) or  public static void main(String args...) which is the primary method equally variable declaration method in addition to precisely supported post-Java five world.

Can nosotros override primary inward Java?

No, you lot tin non override the primary method inward Java, Why? because primary is a static method in addition to inward Java static method is bonded during compile fourth dimension in addition to you lot tin non override static method inward Java. If you lot declare a method amongst same refer in addition to signature its called method hiding.

Can nosotros brand primary in conclusion inward Java?

Of course, you lot tin brand the primary method in conclusion inward Java. JVM has no lawsuit amongst that. Unlike whatever final method, you lot tin non override primary inward Java.

Can nosotros brand primary synchronized inward Java?

Yes, primary tin hold out synchronized inward Java,  synchronized modifier is allowed inward the primary signature in addition to you lot tin brand your primary method synchronized inward Java.

How to telephone telephone a nonstatic method from primary inward Java?

This enquiry applies non precisely to primary but all static methods inward Java. Since nonstatic methods tin non hold out called from static context directly, you lot demand to start practice an Object equally local variable in addition to and hence you lot tin telephone telephone nonstatic method using that object, equally shown inward the next example:

import java.util.Date;


/**
 * Java plan to exhibit how to telephone telephone non static method from static method inward Java
 *
 * @author http://java67.blogspot.com
 */
public class StaticTest {

    public static void main(String args[]) {
     
        // calling non static method from primary inward Java
        //printCurrentTime(); //compile fourth dimension fault - tin non telephone telephone non static method from main
     
        StaticTest attempt out = new StaticTest();
        test.printCurrentTime();
     
    }
 
 
    public void printCurrentTime(){
       System.out.println(new Date());
    }
}

Output:
Tue November 06 19:07:54 IST 2012

Summary

1. The main() method is a static method
2. You tin overload main() method inward Java.
3. You cannot override main() method inward Java
4. You tin brand the primary method in conclusion inward Java
5. You tin brand the primary method synchronized inward Java.
6. You cannot telephone telephone a non-static method from primary inward Java. 

So these were about of the often asked questions close the primary method inward Java. This does non precisely assistance to response interview enquiry but equally good to construct your concept on the primary method inward Java.

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