java的接口回调示例代码

package 测试接口回调函数; public class ClassA { IntefaceC intefaceC; ClassA(IntefaceC c) { intefaceC = c; } public void doSomeThing(int a, int b) { // 模式一些很耗时的操作 System.out.println("计算"+a+"+"+b+"大约需要10秒钟时间，请等待"); try { Thread.sleep(10000); } catch (InterruptedException e) { e.printStackTrace(); } int c=a+b; intefaceC.onfinsh(c); } }