10/23作业 制造人类

package cn.person.www;

public class person {
	
    public int id;
    public String name;
    public int age;
    public String city;
    public String introduce() {
        return "我是" + id + "号, 叫  " + name + ", 今年" + age + "岁了, 来自" + city ;
    } 
 public person(int id,String name,int age,String city) {
	 this.id=id; //this关键字，表达的含义是当前对象 .表示当前对象的某个调用
     this.name=name;
     this.age=age;
     this.city=city;
 }
        
}

　　

package cn.person.www;

public class Demoperson {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
    	person p1=new person(001,"刘备",40,"北京");
    	person p2=new person(002,"关羽",37,"北京");
    	person p3=new person(003,"张飞",45,"北京");
    	person p4=new person(004,"诸葛亮",25,"北京");
        
        System.out.println(p1.introduce());
        System.out.println(p2.introduce());
        System.out.println(p3.introduce());
        System.out.println(p4.introduce());
        
    }

}