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The syntax for instantiating a static nested class is as much like a normal nested class its a very little different from a normal inner class,, we can see this code :
class BigOuter {
static class Nested { }
}class Broom {
public static void main (String [] args) {
BigOuter.Nested n = new BigOuter.Nested(); //Use both class names
}
}
We know that static nested class is referred to as top-level nested classes, or static inner classes, but they really aren't inner classes at all.While an inner class enjoys that special ,a static nested class does not.
It is simply a non interrelationship with the outer class,class scoped within another. So with static classes it's really more about name-space resolution than about an implicit relationship between the two classes,class BigOuter {
static class Nested { }
}
class MyWonderfulClass {
void go() {
Bar b = new Bar();
b.doStuff(AckWeDon'tHaveAFoo!); // Don't try to compile this at home
}
}
interface Foo {
void foof();
}
class Bar {
void doStuff(Foo f) { }
}
Here both of flavour ahev a main and one and only one most important diffrece is that : flavor one creates an anonymous subclass of the specified class type, whereas flavor two creates an anonymous implementer of the specified interface type. see this example :interface Cookable {
public void cook();
}
class Food {
Cookable c = new Cookable() {
public void cook() {
System.out.println("anonymous cookable implementer");
}
};
}
firstly we should know this code:-
class Maggie {
public void pop() {
System.out.println("Maggie");
}
}
class Food {
Maggie m = new Maggie() {
public void mag() {
System.out.println("anonymous Maggie");
}
};
}
Now we accusing about whats the happening in this code :here most impotent thing is :
- here two classes are mentioned maggie and food.
- maggie has one method mag()
- Food has one instance variable, declared as type maggie.
- That's it for Food. Food has no methods.
Maggie reference variable refers not to an instance of Maggie, but to an instance of an anonymous subclass of Maggie.
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