遇到这个错误是在Apache Tomcat上部署应用程序的时候遇到的,具体的错误描述是: java.lang.UnsupportedClassVersionError: HelloWorld has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file vers…
Checking operating system requirements ...Expected result: One of redhat-3,redhat-4,SuSE-9,asianux-1,asianux-2Actual Result: redhat-4Check complete. The overall result of this check is: Passed==========================================================…
Android应用开发中常常会用到定时器,不可避免的需要用到 TimerTask 定时器任务这个类下面简单的一个示例演示了如何使用TimerTask这个示例演示了3秒未有触屏事件发生则锁屏(只是设置下文本,意思一下)有触屏事件则解除锁定 public class ColTimerTaskActivity extends Activity { /** Called when the activity is first created. */ private final String TAG = "…