java-JUC-001

1.  JUC(java.util.concurrent)
   1. 进程/线程
   2. 并发/并从
2. 三个包

   1. java . util. concurrent

   2. java . util . concurrent. atomic

   3. java . util. concurrent. locks

3. 多线程匿名内部类的方式实现：

4. package com.model.concurrent;
   
   import java.util.concurrent.locks.Lock;
   import java.util.concurrent.locks.ReentrantLock;
   
   public class SaleTicketDemo01{
   static class Ticket {
       private int number=30;
       Lock lock=new ReentrantLock();
       public void sale(){
           lock.lock();
           try {
               if (number>0) {
                   System.out.println(Thread.currentThread().getName() + "卖出第" + (number--) + "还剩下：" + number);
               }
           }catch (Exception e){
               e.printStackTrace();
           }finally {
               lock.unlock();
           }
       }
   }
   
       public static void main(String[] args) {
       Ticket ticket= new Ticket();
   
           new Thread(new Runnable() {
               @Override
               public void run() {
                   for (int i=1;i<=40;i++) {
                       ticket.sale();
                   }
               }
           },"A").start();
           new Thread(new Runnable() {
               @Override
               public void run() {
                   for (int i=1;i<=40;i++) {
                       ticket.sale();
                   }
               }
           },"B").start();
           new Thread(new Runnable() {
               @Override
               public void run() {
                   for (int i=1;i<=40;i++) {
                       ticket.sale();
                   }
               }
           },"C").start();
       }
   
   
   }
   
   class Ticket {
       private int number=30;
       Lock lock=new ReentrantLock();
       public void slave(){
           lock.lock();
           try {
               System.out.println(Thread.currentThread().getName()+"没出第"+(number--)+"还剩下："+number);
           }catch (Exception e){
               e.printStackTrace();
           }finally {
               lock.unlock();
           }
       }
   }

    

   　　　　
5. 拉姆发表达式实现方式：
   1. 　　

      package com.model.concurrent;
      
      import java.util.concurrent.locks.Lock;
      import java.util.concurrent.locks.ReentrantLock;
      
      public class SaleTicketDemo01{
      static class Ticket {
          private int number=30;
          Lock lock=new ReentrantLock();
          public void sale(){
              lock.lock();
              try {
                  if (number>0) {
                      System.out.println(Thread.currentThread().getName() + "卖出第" + (number--) + "还剩下：" + number);
                  }
              }catch (Exception e){
                  e.printStackTrace();
              }finally {
                  lock.unlock();
              }
          }
      }
      
          public static void main(String[] args) {
          Ticket ticket= new Ticket();
          
              new Thread(() ->{ for (int i=1;i<=40;i++) { ticket.sale(); } },"A").start();
              new Thread(() ->{ for (int i=1;i<=40;i++) { ticket.sale(); } },"B").start();
              new Thread(() ->{ for (int i=1;i<=40;i++) { ticket.sale(); } },"C").start();
          }
      
      
      }
      
      class Ticket {
          private int number=30;
          Lock lock=new ReentrantLock();
          public void slave(){
              lock.lock();
              try {
                  System.out.println(Thread.currentThread().getName()+"没出第"+(number--)+"还剩下："+number);
              }catch (Exception e){
                  e.printStackTrace();
              }finally {
                  lock.unlock();
              }
          }
      }

       

java-JUC-001

原文：https://www.cnblogs.com/zzhAylm/p/14847308.html