面向对象

1.创建两个文件Dog.java和Test.java

class Dog{
    String name;
    int age;
    String color;
    
    void jump(){
        System.out.println("jump");
    }
}

class Test{
    public static void main(String args[]){
        Dog dog=new Dog();
        
        dog.name="旺财";
        dog.age=2;
        dog.color="黑色";
        
        dog.jump();
        System.out.println("名字是"+dog.name);
    }
}

2.编译并运行