java实现同步回调的示例代码

public interface Callback {
    void onComplete(String result);
}

public class MyCallback implements Callback {
    @Override
    public void onComplete(String result) {
        System.out.println("Callback received result: " + result);
    }
}

public class Processor {
    private Callback callback;

    public Processor(Callback callback) {
        this.callback = callback;
    }

    public void process() {
        // 模拟一些处理
        try {
            Thread.sleep(1000); // 1秒钟的延迟
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        // 调用回调函数
        callback.onComplete("Process Completed");
    }
}

public class Main {
    public static void main(String[] args) {
        // 创建回调对象
        Callback myCallback = new MyCallback();
        
        // 创建处理器并传入回调对象
        Processor processor = new Processor(myCallback);
        
        // 执行处理
        processor.process();
        
        // 主线程等待处理完成
        System.out.println("Main thread continues...");
    }
}