synchronized用法的一個實例

public class TraditionalThreadTest {

	static class Outputer {
		public void output1(String name) {
			synchronized (Outputer.class) {
				for (int i = 0; i < name.length(); i++) {
					System.out.print(name.charAt(i));
				}
				System.out.println();
			}
		}

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

		public static synchronized void output3(String name) {
			for (int i = 0; i < name.length(); i++) {
				System.out.print(name.charAt(i));
			}
			System.out.println();
		}
	}

	public static void main(String[] args) {
		new TraditionalThreadTest().init();
	}

	private void init() {

		final Outputer outputer = new Outputer();
		new Thread(new Runnable() {

			@Override
			public void run() {
				while (true) {
					outputer.output1("111111111111111");
				}
			}
		}).start();

		new Thread(new Runnable() {

			@Override
			public void run() {
				while (true) {
					outputer.output2("0000000000000000000");
				}
			}
		}).start();

		new Thread(new Runnable() {

			@Override
			public void run() {
				while (true) {
					outputer.output3("2222222222222222222");
				}
			}
		}).start();
	}
}