java静态动态的区别_Java中的动态和静态多态有什么区别？

多态性

1.静态绑定/编译时绑定/早期绑定/方法重载。(在同一类中)

2.动态绑定/运行时绑定/后期绑定/方法覆盖。(在不同的类中)

重载示例：

class Calculation {

void sum(int a,int b){System.out.println(a+b);}

void sum(int a,int b,int c){System.out.println(a+b+c);}

public static void main(String args[]) {

Calculation obj=new Calculation();

obj.sum(10,10,10);  // 30

obj.sum(20,20);     //40

}

}

压倒一切的例子：

class Animal {

public void move(){

System.out.println("Animals can move");

}

}

class Dog extends Animal {

public void move() {

System.out.println("Dogs can walk and run");

}

}

public class TestDog {

public static void main(String args[]) {

Animal a = new Animal(); // Animal reference and object

Animal b = new Dog(); // Animal reference but Dog object

a.move();//output: Animals can move

b.move();//output:Dogs can walk and run

}

}