/**
* Java线程：新特征-原子量
*
* @author leizhimin 2009-11-6 9:53:11
*/
public class Test {
        public static void main(String[] args) {
                ExecutorService pool = Executors.newFixedThreadPool(2);
                Runnable t1 = new MyRunnable("张三", 2000);
                Runnable t2 = new MyRunnable("李四", 3600);
                Runnable t3 = new MyRunnable("王五", 2700);
                Runnable t4 = new MyRunnable("老张", 600);
                Runnable t5 = new MyRunnable("老牛", 1300);
                Runnable t6 = new MyRunnable("胖子", 800);
                //执行各个线程
                pool.execute(t1);
                pool.execute(t2);
                pool.execute(t3);
                pool.execute(t4);
                pool.execute(t5);
                pool.execute(t6);
                //关闭线程池
                pool.shutdown();
        }
}

class MyRunnable implements Runnable {
        private static AtomicLong aLong = new AtomicLong(10000);        //原子量，每个线程都可以自由操作
        private String name;                //操作人
        private int x;                            //操作数额

        MyRunnable(String name, int x) {
                this.name = name;
                this.x = x;
        }

        public void run() {
                System.out.println(name + "执行了" + x + "，当前余额：" + aLong.addAndGet(x));
        }
}

Process finished with exit code 0

Process finished with exit code 0

Process finished with exit code 0

/**
* Java线程：新特征-原子量
*
* @author leizhimin 2009-11-6 9:53:11
*/
public class Test {
        public static void main(String[] args) {
                ExecutorService pool = Executors.newFixedThreadPool(2);
                Lock lock = new ReentrantLock(false);
                Runnable t1 = new MyRunnable("张三", 2000,lock);
                Runnable t2 = new MyRunnable("李四", 3600,lock);
                Runnable t3 = new MyRunnable("王五", 2700,lock);
                Runnable t4 = new MyRunnable("老张", 600,lock);
                Runnable t5 = new MyRunnable("老牛", 1300,lock);
                Runnable t6 = new MyRunnable("胖子", 800,lock);
                //执行各个线程
                pool.execute(t1);
                pool.execute(t2);
                pool.execute(t3);
                pool.execute(t4);
                pool.execute(t5);
                pool.execute(t6);
                //关闭线程池
                pool.shutdown();
        }
}

class MyRunnable implements Runnable {
        private static AtomicLong aLong = new AtomicLong(10000);        //原子量，每个线程都可以自由操作
        private String name;                //操作人
        private int x;                            //操作数额
        private Lock lock;

        MyRunnable(String name, int x,Lock lock) {
                this.name = name;
                this.x = x;
                this.lock = lock;
        }

        public void run() {
                lock.lock();
                System.out.println(name + "执行了" + x + "，当前余额：" + aLong.addAndGet(x));
                lock.unlock();
        }
}

Process finished with exit code 0

/**
* Java线程：条件变量
*
* @author leizhimin 2009-11-5 10:57:29
*/
public class Test {
        public static void main(String[] args) {
                //创建并发访问的账户
                MyCount myCount = new MyCount("95599200901215522", 10000);
                //创建一个线程池
                ExecutorService pool = Executors.newFixedThreadPool(2);
                Thread t1 = new SaveThread("张三", myCount, 2000);
                Thread t2 = new SaveThread("李四", myCount, 3600);
                Thread t3 = new DrawThread("王五", myCount, 2700);
                Thread t4 = new SaveThread("老张", myCount, 600);
                Thread t5 = new DrawThread("老牛", myCount, 1300);
                Thread t6 = new DrawThread("胖子", myCount, 800);
                //执行各个线程
                pool.execute(t1);
                pool.execute(t2);
                pool.execute(t3);
                pool.execute(t4);
                pool.execute(t5);
                pool.execute(t6);
                //关闭线程池
                pool.shutdown();
        }
}

/**
* 存款线程类
*/
class SaveThread extends Thread {
        private String name;                //操作人
        private MyCount myCount;        //账户
        private int x;                            //存款金额

        SaveThread(String name, MyCount myCount, int x) {
                this.name = name;
                this.myCount = myCount;
                this.x = x;
        }

        public void run() {
                myCount.saving(x, name);
        }
}

/**
* 取款线程类
*/
class DrawThread extends Thread {
        private String name;                //操作人
        private MyCount myCount;        //账户
        private int x;                            //存款金额

        DrawThread(String name, MyCount myCount, int x) {
                this.name = name;
                this.myCount = myCount;
                this.x = x;
        }

        public void run() {
                myCount.drawing(x, name);
        }
}

/**
* 普通银行账户，不可透支
*/
class MyCount {
        private String oid;                         //账号
        private int cash;                             //账户余额
        private Lock lock = new ReentrantLock();                //账户锁
        private Condition _save = lock.newCondition();    //存款条件
        private Condition _draw = lock.newCondition();    //取款条件

        MyCount(String oid, int cash) {
                this.oid = oid;
                this.cash = cash;
        }

        /**
         * 存款
         *
         * @param x        操作金额
         * @param name 操作人
         */
        public void saving(int x, String name) {
                lock.lock();                        //获取锁
                if (x > 0) {
                        cash += x;                    //存款
                        System.out.println(name + "存款" + x + "，当前余额为" + cash);
                }
                _draw.signalAll();            //唤醒所有等待线程。
                lock.unlock();                    //释放锁
        }

        /**
         * 取款
         *
         * @param x        操作金额
         * @param name 操作人
         */
        public void drawing(int x, String name) {
                lock.lock();                                 //获取锁
                try {
                        if (cash – x < 0) {
                                _draw.await();             //阻塞取款操作
                        } else {
                                cash -= x;                     //取款
                                System.out.println(name + "取款" + x + "，当前余额为" + cash);
                        }
                        _save.signalAll();             //唤醒所有存款操作
                } catch (InterruptedException e) {
                        e.printStackTrace();
                } finally {
                        lock.unlock();                     //释放锁
                }
        }
}

Process finished with exit code 0

/**
* Java线程：不用条件变量
*
* @author leizhimin 2009-11-5 10:57:29
*/
public class Test {
        public static void main(String[] args) {
                //创建并发访问的账户
                MyCount myCount = new MyCount("95599200901215522", 10000);
                //创建一个线程池
                ExecutorService pool = Executors.newFixedThreadPool(2);
                Thread t1 = new SaveThread("张三", myCount, 2000);
                Thread t2 = new SaveThread("李四", myCount, 3600);
                Thread t3 = new DrawThread("王五", myCount, 2700);
                Thread t4 = new SaveThread("老张", myCount, 600);
                Thread t5 = new DrawThread("老牛", myCount, 1300);
                Thread t6 = new DrawThread("胖子", myCount, 800);
                //执行各个线程
                pool.execute(t1);
                pool.execute(t2);
                pool.execute(t3);
                pool.execute(t4);
                pool.execute(t5);
                pool.execute(t6);
                //关闭线程池
                pool.shutdown();
        }
}

/**
* 存款线程类
*/
class SaveThread extends Thread {
        private String name;                //操作人
        private MyCount myCount;        //账户
        private int x;                            //存款金额

        SaveThread(String name, MyCount myCount, int x) {
                this.name = name;
                this.myCount = myCount;
                this.x = x;
        }

        public void run() {
                myCount.saving(x, name);
        }
}

/**
* 取款线程类
*/
class DrawThread extends Thread {
        private String name;                //操作人
        private MyCount myCount;        //账户
        private int x;                            //存款金额

        DrawThread(String name, MyCount myCount, int x) {
                this.name = name;
                this.myCount = myCount;
                this.x = x;
        }

        public void run() {
                myCount.drawing(x, name);
        }
}

/**
* 普通银行账户，不可透支
*/
class MyCount {
        private String oid;                         //账号
        private int cash;                             //账户余额

        MyCount(String oid, int cash) {
                this.oid = oid;
                this.cash = cash;
        }

        /**
         * 存款
         *
         * @param x        操作金额
         * @param name 操作人
         */
        public synchronized void saving(int x, String name) {
                if (x > 0) {
                        cash += x;                    //存款
                        System.out.println(name + "存款" + x + "，当前余额为" + cash);
                }
                notifyAll();            //唤醒所有等待线程。
        }

        /**
         * 取款
         *
         * @param x        操作金额
         * @param name 操作人
         */
        public synchronized void drawing(int x, String name) {
                if (cash – x < 0) {
                        try {
                                wait();
                        } catch (InterruptedException e1) {
                                e1.printStackTrace();
                        }
                } else {
                        cash -= x;                     //取款
                        System.out.println(name + "取款" + x + "，当前余额为" + cash);
                }
                notifyAll();             //唤醒所有存款操作
        }
}

Process finished with exit code 0

/**
* Java线程：改为同步代码块
*
* @author leizhimin 2009-11-5 10:57:29
*/
public class Test {
        public static void main(String[] args) {
                //创建并发访问的账户
                MyCount myCount = new MyCount("95599200901215522", 10000);
                //创建一个线程池
                ExecutorService pool = Executors.newFixedThreadPool(2);
                Thread t1 = new SaveThread("张三", myCount, 2000);
                Thread t2 = new SaveThread("李四", myCount, 3600);
                Thread t3 = new DrawThread("王五", myCount, 2700);
                Thread t4 = new SaveThread("老张", myCount, 600);
                Thread t5 = new DrawThread("老牛", myCount, 1300);
                Thread t6 = new DrawThread("胖子", myCount, 800);
                //执行各个线程
                pool.execute(t1);
                pool.execute(t2);
                pool.execute(t3);
                pool.execute(t4);
                pool.execute(t5);
                pool.execute(t6);
                //关闭线程池
                pool.shutdown();
        }
}

/**
* 存款线程类
*/
class SaveThread extends Thread {
        private String name;                //操作人
        private MyCount myCount;        //账户
        private int x;                            //存款金额

        SaveThread(String name, MyCount myCount, int x) {
                this.name = name;
                this.myCount = myCount;
                this.x = x;
        }

        public void run() {
                myCount.saving(x, name);
        }
}

/**
* 取款线程类
*/
class DrawThread extends Thread {
        private String name;                //操作人
        private MyCount myCount;        //账户
        private int x;                            //存款金额

        DrawThread(String name, MyCount myCount, int x) {
                this.name = name;
                this.myCount = myCount;
                this.x = x;
        }

        public void run() {
                myCount.drawing(x, name);
        }
}

/**
* 普通银行账户，不可透支
*/
class MyCount {
        private String oid;                         //账号
        private int cash;                             //账户余额

        MyCount(String oid, int cash) {
                this.oid = oid;
                this.cash = cash;
        }

        /**
         * 存款
         *
         * @param x        操作金额
         * @param name 操作人
         */
        public void saving(int x, String name) {
                if (x > 0) {
                        synchronized (this) {
                                cash += x;                    //存款
                                System.out.println(name + "存款" + x + "，当前余额为" + cash);
                                notifyAll();            //唤醒所有等待线程。
                        }
                }
        }

        /**
         * 取款
         *
         * @param x        操作金额
         * @param name 操作人
         */
        public synchronized void drawing(int x, String name) {
                synchronized (this) {
                        if (cash – x < 0) {
                                try {
                                        wait();
                                } catch (InterruptedException e1) {
                                        e1.printStackTrace();
                                }
                        } else {
                                cash -= x;                     //取款
                                System.out.println(name + "取款" + x + "，当前余额为" + cash);
                        }
                }
                notifyAll();             //唤醒所有存款操作
        }
}

Process finished with exit code 0