（黑马Java多线程与并发库高级应用）03 传统线程互斥技术

synchronized关键字

方式一1：

package cn.itcast.heima2;

public class TraditionalThreadSynchronized {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Output outputer = new TraditionalThreadSynchronized().new Output();
        new Thread(new Runnable() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                while (true) {
                    try {
                        Thread.sleep(10);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    outputer.output("zhangxiaoxiang");
                }
            }

        }).start();

        new Thread(new Runnable() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                while (true) {
                    try {
                        Thread.sleep(10);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    outputer.output("lihuoming");
                }
            }

        }).start();
    }

    class Output {
        public void output(String name) {
            int len = name.length();
            synchronized (this) {
                for (int i = 0; i < len; i++) {
                    System.out.print(name.charAt(i));
                }
                System.out.println();
            }
        }
    }
}

 非静态synchronize方法：锁对象是this

package cn.itcast.heima2;

public class TraditionalThreadSynchronized {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Output outputer = new TraditionalThreadSynchronized().new Output();
        new Thread(new Runnable() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                while (true) {
                    try {
                        Thread.sleep(10);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    outputer.output("zhangxiaoxiang");
                }
            }

        }).start();

        new Thread(new Runnable() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                while (true) {
                    try {
                        Thread.sleep(10);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    outputer.output("lihuoming");
                }
            }

        }).start();
    }

    class Output {
        public synchronized void output(String name) {
            int len = name.length();
                for (int i = 0; i < len; i++) {
                    System.out.print(name.charAt(i));
                }
                System.out.println();
        }
    }
}

静态方法的锁是class对象：

package cn.itcast.heima2;

public class TraditionalThreadSynchronized {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Output outputer = new TraditionalThreadSynchronized.Output();new Thread(new Runnable() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                while (true) {
                    try {
                        Thread.sleep(10);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    outputer.output("zhangxiaoxiang");
                }
            }

        }).start();

        new Thread(new Runnable() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                while (true) {
                    try {
                        Thread.sleep(10);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    outputer.output2("lihuoming");
                }
            }

        }).start();
    }

    static class Output {
        public void output(String name) {
            int len = name.length();
            synchronized (Output.class) {
                for (int i = 0; i < len; i++) {
                    System.out.print(name.charAt(i));
                }
                System.out.println();
            }
        }

        public static synchronized void output2(String name) {
            int len = name.length();
            for (int i = 0; i < len; i++) {
                System.out.print(name.charAt(i));
            }
            System.out.println();
        }

    }
}