
依赖string特性?是否
核心特性:不可变性(创建后内容不可修改)

JAVA字符串类型
char[] (字符数组)

抽象类
java
public abstract class Player {
public void PlayGenShin(){
System.out.println("I like to play yuanshen");
}
class War3Player{
private char[] Name;
War3Player(char Name)
{this.Name=new char[Name];}
private Integer num;
War3Player(Integer num)
{this.num=new Integer(num);}
}
//int 是整形,开辟一个空间 命名,应该用字符串类型:char String等
//int是基本类型,没有构造方法,要用integer
//定义变量需要用驼峰命名法吗?
public abstract void PlayLol();
public void PlayGame(){
PlayGenShin();
War3Player xiaocao=new War3Player('k');
War3Player playwar3=new War3Player(3);
}
public void main(String[] args){
System.out.println("yuanshen qidong");
}
}
抽象类继承
java
public class PlayerExtend extends Player{
@Override
public void PlayLol() {
PlayerExtend ok=new PlayerExtend();
ok.PlayGenShin();
ok.main(null);
}
}
