摘要:
package ting; public abstract class Person { private String name; private int age; public String getName() { return name; } public void setName(String name) { this... 阅读全文
摘要:
package ting; public abstract class A { private String name; public A(String name) { this.name=name; } public String getName() { return this.name; } public abs... 阅读全文