摘要：
package z; public class PersonArray { public static void main(String args[]) { person per[]=new person[3]; per[0]=new person("张三",20); per[1]=new pers 阅读全文
摘要：
package Z; public abstract class Person { private String name; private int age; public String getName() { return name; } public void setName(String na 阅读全文
摘要：
package Z; public abstract class A { private String name; public A(String name) { this.name=name; } public String getName() { return this.name; } publ 阅读全文