课堂代码练习1

课堂代码练习

一、 Dog下

package com.dog.www;

public class Dog{
    //名字
    private String name;
    //年龄
    private int age;
    //颜色
    private String color;

    public Dog(){

    }

    /**
     * 构造方法 用来实例化 对象
     * @param name
     * @param age
     * @param color
     */
    //右键生成构造方法
    public Dog(String name, int age, String color) {
        this.name = name;
        this.age = age;
        this.color = color;
    }
    //右键生成
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }
    public void barks(){
        System.out.println(this.name + "正在叫...");
    }
    public void eat(){
        System.out.println(this.name + "正在吃...");
    }
    //静态方法
    public static void staticfun(){
        System.out.println( "执行了staticfun...");
    }

    public void show(){
        System.out.println("狗名: "+ this.name + " 年龄: "+this.age+" 颜色: "+this.color);
    }
    //动态绑定，多态
    public String toString(){
        String ret = "狗名: "+ this.name + " 年龄: "+this.age+" 颜色: "+this.color;
        return ret;
    }
}

二、Test下

package com.dog.www;

public class Test {

    public static void main(String[] args) {
        //Dog dog = new Dog("旺财",3,"白色");
        Dog dog = new Dog();
        //引用
        dog.setName("旺财");
        dog.setAge(4);
        dog.setColor("白色");
        dog.eat();
        dog.barks();

        //dog.show();
		
        System.out.println(dog);
    }
}

---

完…
敬请不吝赐教