Applying static keyword to a class in java

Question

My problem is regarding the application of Static keyword for a class. As it is easy to apply static keyword for instance variables and methods but while coming to classes it is not working. finally please help me to solve the code

static class Box{
    static int width,depth,height;
    static void volume(int w,int d,int h){
        double vol=w*d*h;
        System.out.println(vol);
    }
}

class ClassStaticTest{
    public static void main(String[] args){
        //Box b=new Box();
        width=10;
        height=10;
        depth=10;
        Box.volume(10,10,10);
    }
}

What do you expect it to do? – dryairship Mar 22 '16 at 13:12 — dryairship, Mar 22 '16 at 13:12

score 2 · Accepted Answer · answered Mar 22 '16 at 13:12

2

Top-level classes cannot be static, because the static keyword represents a relation between a class/member/method and the enclosing class.

As the top-level classes don't have an enclosing class, then the static keyword doesn't makes sense in this case.

answered Mar 22 '16 at 13:12

Konstantin Yovkov

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score 0 · Answer 2 · answered Mar 22 '16 at 13:13

0

It makes no sense to make non-inner classes static.

static means: on the level of the containing class, and not instance of it.

In what you try to do: there is no containing class.

answered Mar 22 '16 at 13:13

Stultuske

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score 0 · Answer 3 · answered Mar 22 '16 at 13:13

0

Only nested (inner) classes may be static. static has no meaning with regular classes

answered Mar 22 '16 at 13:13

Alexey

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Applying static keyword to a class in java

3 Answers3