摘要:
demo1下的Cat类 package com.ITheima.op_object.demo1; public class Cat { public void run(){ System.out.println("demo1下的cat"); } } View Code demo2下的Cat类 pac 阅读全文
摘要:
Person类 package com.ITheima.d7_extends; public class Person { private String name; private int age; public String getName() { return name; } public vo 阅读全文
摘要:
饿汉单例模式 SingleInstance package com.ITheima._static_codeblock; public class SingleInstance { /** * 1 把无参构造器私有藏起来 */ private SingleInstance(){ } /** * 2 阅读全文