JAVA多线程设计方式七 Thread-Per-Message Pattern

JAVA多线程设计模式七 Thread-Per-Message Pattern

一个线程委托另外一个线程处理。

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public class Host {    private final Helper helper = new Helper();    public void request(final int count, final char c) {        System.out.println("    request(" + count + ", " + c + ") BEGIN");        new Thread() {            public void run() {                helper.handle(count, c);            }        }.start();        System.out.println("    request(" + count + ", " + c + ") END");    }}

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public class Helper {    public void handle(int count, char c) {        System.out.println("        handle(" + count + ", " + c + ") BEGIN");        for (int i = 0; i < count; i++) {            slowly();            System.out.print(c);        }        System.out.println("");        System.out.println("        handle(" + count + ", " + c + ") END");    }    private void slowly() {        try {            Thread.sleep(1000);        } catch (InterruptedException e) {        }    }}

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public class Main {    public static void main(String[] args) {        System.out.println("main BEGIN");        Host host = new Host();        host.request(10, 'A');        host.request(20, 'B');        host.request(30, 'C');        System.out.println("main END");    }}

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适合无需返回值，不要求顺序的。

另外 注意实际执行者得委托给其他类来执行。