Question

Why is so that a program in JAVA also runs with static block only without any main ??

Answer 1

You want to know if you always need the main() method?

Answer 2

Because Java is Object-Oriented, everything is an object. Static methods allow you to use a block of code without instantiating an instance of that class.

Answer 3

public class WithoutMain {
static {
System.out.println("Program without Main");
System.exit(0);
}
}
why this dont need any main method as the only way to run without main is making applet ...

Answer 4

All right, this is a interesting question. So, labeling something as static within a class makes that item part of the class itself and not the object. For instance, if you were to give a static variable 'count' which you use to keep track of the number of cars you've created, that value would sort of exist outside of each Car object created.

Answer 5

hmmmmm

Answer 6

For your static block, if you were to instantiate more than one 'WithoutMain' class object, you would only see the code in the static block printed once.

public class Test {
public Test() {
}
static {
System.out.println("Program without Main");
System.exit(0);
}
}

Answer 7

public class TestTwo {
static {
Test test1 = new Test();
Test test2 = new Test();
Test test3 = new Test();
}
}

Answer 8

output after execution is: ~/D/javaTest> java TestTwo
Program without Main

Answer 9

So this does then depend upon the environment in which you are using you Java classes. An applet is made so that it can be used on the web, while non-applets are not.

Answer 10

Thanks, but I feel I may not have given the real answer. I guess this actually is difficult question, I've seen mention that since Java is Object-Oriented that main method is an 'entry point' into a class.