Java面向对象之关键字this 入门实例

class Person
{
    private String name;
    private int age;
    
    Person()
    {
        name = "bady";
    }
    
    Person(String n)
    {
        name = n;
    }
    
    Person(String name,int age)
    {
        this(name);//调用构造函数语句。
        this.age = age;//this标识的成员变量。
    }
    
    public void show1()
    {
        System.out.println("name="+name);
    }
    
    public void show2()
    {
        System.out.println("name="+name+",age"+age);
    }
    
    //传递一个Person对象，判断是否为同龄人。
    public boolean equalsAge(Person pp)
    {
        return pp.age == this.age;
    }
}

class ThisDemo
{
    public static void main(String[] args) 
    {
        Person p1 = new Person();
        p1.show1();
        Person p2 = new Person("xiaoming");
        p2.show1();
        Person p3 = new Person("xiaoming",20);
        p3.show2();
        Person p4 = new Person("xiaohong",21);
        p4.show2();
        
        //调用equalsAge方法，判断p3和p4是否为同龄人。
        boolean b = p3.equalsAge(p4);
        System.out.println("Whether or not the age is equal:  "+b);
    }
    
}