java -对象和封装

宠物狗狗类

public class Dog {

    String name="哈哈"; 
    int health = 100;  
    int love =100;      
    String strain="二哈";
    
    public void print(){
        System.out.println("宠物的自白:\n我的名字"+this.name
+",健康值是"+this.health+",和主人的亲密度是"+this.love+",我是一只"+this.strain+"。");
    }
}

宠物企鹅类

public class Penguin {
    String name="嘿嘿"; 
    int health = 100;   
    int love = 100;      
    String sex="Q仔";
    
    public void print(){
        System.out.println("宠物的自白:\n我的名字"+this.name+",健康值是"+this.health
+",和主人的亲密度是"+this.love+",性别是"+this.sex+"。");
    }
}

    测试类
public class Test {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.println("欢迎您来到宠物店!");
        System.out.println("请输入要领养的宠物的名字:");
        String name = input.next();
        System.out.println("请选择要领养的的类型:(1.狗狗 2.企鹅)");
        int num = input.nextInt();
        switch(num){
            case 1 :
                System.out.println("请选择狗狗的品种:(1.二哈2.金毛)");
                String strain= input.next();
                if(input.nextInt()==1){
                    strain = "二哈";
                }else{
                    strain = "金毛";
                }
                
                Dog dog=new Dog();
                dog.name=name;
                dog.strain=strain;
                dog.print();
                break;
            case 2 :
                System.out.println("请选择企鹅的性别:(1.Q仔 2.Q妹)");
                String sex=input.next();
                if(sex.equals("1")){
                    sex="Q仔";
                }else{
                    sex="Q妹";
                }
                Penguin pgn = new Penguin();
                pgn.name=name;
                pgn.sex=sex;
                pgn.print();
                break;
        }
    }
}    

public Dog(){
        System.out.println("Dog无参构造方法....");
        this.name="二哈";
        
    }

public Dog(String n,int h,int love){
        System.out.println("有参构造方法....");
        this.name=n;
        this.health=h;
        this.love=love;
    }


    测试
Dog  dog = new Dog(); 
Dog  dog2= new Dog("二哈",89,100);