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Copy pathSimpleFuture.java
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49 lines (37 loc) · 1.21 KB
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public class SimpleFuture {
private String result;
private boolean isDone;
public SimpleFuture() {
this.isDone = false;
}
// 设置任务结果，并唤醒等待的线程
public synchronized void setResult(String result) {
this.result = result;
this.isDone = true;
notifyAll(); // 唤醒所有等待的线程
}
// 获取任务结果，如果任务未完成，则等待
public synchronized String get() {
while (!isDone) {
}
return result;
}
// 检查任务是否完成
public synchronized boolean isDone() {
return isDone;
}
public static void main(String[] args) {
SimpleFuture future = new SimpleFuture();
// 启动一个线程来模拟异步任务
Thread asyncTask = new Thread(() -> {
// 模拟异步任务需要一些时间来完成
for(int i=0;i<1000;i++);
future.setResult("Task completed"); // 设置结果
});
asyncTask.start();
System.out.println("Doing something else...");
// 获取异步任务结果
String result = future.get();
System.out.println("Result: " + result);
}
}