多個線程之間共用資料

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上載者:User

標籤:public   stat   runnable   err   new t   rgs   har   nts   ide   

public class ThreadDemo4 {
  static ShareData data=new ShareData();
  public static void main(String[] args) {

    new Thread(new Myrunnable1(data)).start();
    new Thread(new Myrunnable2(data)).start();

  }

}

class Myrunnable1 implements Runnable{
  int i=50;

  private ShareData data;

  public Myrunnable1(ShareData data){
    this.data=data;
  }

  @Override
  public void run() {

    while(i>0){
      i--;
    data.increment();}
  }

}


class Myrunnable2 implements Runnable{
  int i=50;

  private ShareData data;

  public Myrunnable2(ShareData data){

    this.data=data;
  }

  @Override
  public void run() {
    while(i>0){
      i--;
    data.decrement();}

  }

}

class ShareData{
private int j=1;
public void increment(){
j++;
System.out.println("加一得 "+j);

}
public void decrement(){

j--;
System.out.println("減一得 "+j);
}


}

多個線程之間共用資料

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