JAVA wants the class to be new, you can use private to change the constructor of the class to private, so new will have an error.

JAVA wants the class to be new, you can use private to change the constructor to private, so new will be an error.

Mainly used for static tools classes, static classes do not need new, directly using the class name. Static methods can be called

classd{PrivateD () {}Static voidf () {System.out.println ("I am a static method, do not need new, if you new, I will give you an error, the direct class name." My name () can call me "); }}/*if the class, do not want to be new, you can not want to be the new class construction method to write private*/ Public classindex{ Public Static voidMain (string[] args) {//d a= new D ();//if new, the error will beD.F ();//calling a static class    }}

JAVA wants the class to be new, you can use private to change the constructor of the class to private, so new will have an error.