java第一阶段 demo实例hashoperate及承抽象函数和实现接口

package hash;

import javax.management.relation.RoleResult;
import java.util.Enumeration;
import java.util.Hashtable;

public class operate {
    private static Hashtable rightList=new Hashtable();
    public void init()
    {
        String[] accRoleLost={"admin","satrap","manager","user","guest"};
        String[] rightCodeList={"10001","10011","10021","20011","24011"};
        for(int i=0;i<accRoleLost.length;i++)
        {
            rightList.put(accRoleLost[i],rightCodeList[i]);
        }
    }
    public String getRight(String accRole)
    {
        if(rightList.containsKey(accRole))return (String)rightList.get(accRole);
        else return null;
    }
    public void insert(String accRole,String rightCode)
    {
        rightList.put(accRole,rightCode);
    }
    public void delete(String accRole)
    {
        if(rightList.containsKey(accRole)) rightList.remove(accRole);
    }
    public void update(String accRole,String rightCode)
    {
        this.insert(accRole,rightCode);
    }
    public void print()
    {
        Enumeration RLKey =rightList.keys();
        while(RLKey.hasMoreElements())
        {
            String accRole=RLKey.nextElement().toString();
            print(accRole+"="+this.getRight(accRole));
        }
    }
    public void print(Object oPara)
    {
        System.out.println(oPara);
    }

    public static void main(String[] args) {
        operate RR=new operate();
        RR.init();
        RR.print();
        RR.print("_______________________");
        RR.insert("presider","10110");
        RR.print();
        RR.update("presider","10100");
        RR.print();
        RR.delete("presider");
        RR.print();
    }
}

package hash;

interface  player
{
    public int flag =1;
    public void play();
    public void pause();
    public void stop();
}
abstract class playing
{
     public void display(Object oPara){
         System.out.println(oPara);
     }
    public abstract void winRun();
}
class X extends playing implements player
{
    public void display(Object oPara) {
        super.display(oPara);
    }

    public void play()
    {
        System.out.println("play");
    }
    public void pause() {
        System.out.println("pause");
    }
    public void stop()
    {
        System.out.println("stop");
    }
    public void winRun()
    {
        System.out.println("运行中");
    }
}
public  class operate
{
    public static void main(String[] args) {
          X x=new X();
          x.display(x);
          x.play();
          x.pause();
          x.stop();
          x.winRun();
    }
}