futureresult.java

来自「java多线程设计模式源代码」· Java 代码 · 共 21 行

package activeobject;

class FutureResult extends Result {
    private Result result;
    private boolean ready = false;
    public synchronized void setResult(Result result) {
        this.result = result;
        this.ready = true;
        notifyAll();
    }
    public synchronized Object getResultValue() {
        while (!ready) {
            try {
                wait();
            } catch (InterruptedException e) {
            }
        }
        return result.getResultValue();
    }
}