Question

why "private static void main(String arg[])" is working properly

Asked by: amardeep_2k

Please tell why main, declared to be private is still working properly. If it is all right to use it that way then when and where should we use public and where should private be used.


class Test12
{
    private static void main(String s[])
    {
         System.out.println("This fe");
    }
}

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Asked On
2001-03-13 at 20:05:29ID20091243
Topic

Java Programming Language

Participating Experts
3
Points
200
Comments
6

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Answers

 

by: rkenworthyPosted on 2001-03-13 at 20:29:07ID: 5926902

Straight from sun's java tutorial at http://java.sun.com/docs/books/tutorial/getStarted/application/main.html

Every Java application must contain a main method whose signature looks like this:

public static void main(String[] args)

The method signature for the main method contains three modifiers:
public indicates that the main method can be called by any object. Controlling Access to Members of a Class covers the ins and outs of the access modifiers supported by the Java language.
static indicates that the main method is a class method. Understanding Instance and Class Members talks about class methods and variables.
void indicates that the main method doesn't return any value.

 

by: rkenworthyPosted on 2001-03-13 at 20:32:03ID: 5926906

Also, here is a link that discusses more about restricting access. Remember there are two types you didnt mention: protected and no modifier at all which is called "package protected".

http://java.sun.com/docs/books/tutorial/java/javaOO/accesscontrol.html

 

by: heyhey_Posted on 2001-03-14 at 01:37:01ID: 5927514

> Please tell why main, declared to be private is still working properly.

it does not

[d:\]java Test12
In class Test12: main must be public and static

 

by: omry_yPosted on 2001-03-14 at 03:23:19ID: 5927803

depends on the JVM, I suppose.
its a bug in old sun JVM`s, that got fix in the newer ones (1.3?)

 

by: heyhey_Posted on 2001-03-14 at 03:40:35ID: 5927846

I've tried it on IBM jdk 1.1.7

 

by: omry_yPosted on 2001-03-14 at 05:00:48ID: 5928049

just checked it with jdk1.2.2 and jdk1.3, it worked on both.

its a known bug, that will not be fixed :

http://developer.java.sun.com/developer/bugParade/bugs/4252539.html

20120131-EE-VQP-002

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