Function within a function in Java
The reason you cannot do this is that functions must be methods attached to a class. Unlike JavaScript and similar languages, functions are not a data type. There is a movement to make them into one to support closures in Java (hopefully in Java 8), but as of Java 6 and 7, it's not supported. If you wanted to do something similar, you could do this:
interface MyFun {
void fun2();
}
public static boolean fun1()
{
MyFun fun2 = new MyFun() {
public void fun2() {
//....
}
};
fun2.fun2();
return returnValue;
}
You cannot (and in Java they are called methods).
You can, however, define an anonymous class inside of a method, and call its methods.