第十四天，java之一个类的方法可以访问该类的所有对象的私有属性

package learn20180720;

public class People {

	private String name;
	private Integer age;
	private Double height;
	
	public People(){
		this.name = "";
		this.age = 0 ;
		this.height = 0.0;
	}

	public People(String name, Integer age, Double height) {
		super();
		this.name = name;
		this.age = age;
		this.height = height;
	}

	public String getName() {
		return name;
	}

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

	public Integer getAge() {
		return age;
	}

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

	public Double getHeight() {
		return height;
	}

	public void setHeight(Double height) {
		this.height = height;
	}
	
	public void  tellObjectName(People p) {
		System.err.println(p.name);
	}
	
	public void sayInformation() {
		System.err.println("我的名字叫做："+this.name+"我的年龄是："+this.age+"我的身高是"+this.height);
	}
}

package learn20180720;

public class TestPeCh {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		People p1 = new People("小明",14,187.5);
		People p2 = new People("小强",15,190.5);
		
		p1.tellObjectName(p2);
		
		
	}

---

在People类中有一个tellObjectName（）的方法，这个方法的显示参数是People类型的。

也就是说在main方法中，p1的tellObjectName（）方法访问了p2的私有属性name。

也就是说：People类的方法可以访问任何一个People对象的私有属性。