开启两个线程，一个线程打印A～Z，一个线程打印1～52的数据

开启两个线程，一个线程打印A～Z，一个线程打印1～52的数据

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class D20190803  {

      private  char a='A';
      private Lock lock = new ReentrantLock();
      private Condition c_one=lock.newCondition();
      private Condition c_two=lock.newCondition();
      private static boolean flag=true;

      Thread letter=new Thread(new Runnable() {

           public void run() {

               for (int i=0;i<26;i++) {

                 lock.lock();  

                   try {

                    if(flag) {

                        c_two.await();

                    }

                     System.out.print("【"+a+"】");

                       a++;

                    Thread.sleep(100);
                    flag=true;
                    c_one.signal();

                } catch (InterruptedException e) {

                    e.printStackTrace();
                }finally {

                    lock.unlock();
                }

               }

           }
      });

      Thread number=new Thread(new Runnable() {

           public void run() {

               for (int j=1;j<53;j++) {

                   lock.lock();

                   System.out.print(j+",");

                   if(j%2==0 ) {

                       try {

                            Thread.sleep(100);
                            c_two.signal();
                            flag=false;

                        if(!flag) {

                            c_one.await();
                        }

                    } catch (InterruptedException e) {

                        e.printStackTrace();
                    }finally {

                        lock.unlock();
                    }

                    } 

                   }

               }

      });

    public static void main(String[] args) throws InterruptedException {

        D20190803 d=new D20190803();
        d.letter.start();
        Thread.sleep(1000);
        d.number.start();

    }

}