java - 使用 public static main(String args) 执行 PerformExecute()

Question

 public class XGetProgramGuideDirectTestControllerCmdImpl extends ControllerCommandImpl implements XGetProgramGuideDirectTestControllerCmd {
    public final String CLASSNAME = this.getClass().getName();
    public void performExecute() throws ECException { /* code is here*/ }

    private void callUSInterface() throws ECException { /* code is here*/ }

    private void callDEInterface() throws ECException { /* code is here*/ }

    private void callUKInterface() throws ECException { /* code is here*/ }

    public void setRequestProperties(TypedProperty req) throws ECException { /* code is here*/ }

    private void displayResponse(StringBuffer testResult) { /* code is here*/ }

    public static void main(String[] args) {
        XGetProgramGuideDirectTestControllerCmdImpl PGDirTestController = new XGetProgramGuideDirectTestControllerCmdImpl();
        PGDirTestController.performExecute();
    }

}

我只是尝试使用 public static void main(String[] args) 在 Eclipse-RAD 中将此应用程序作为 java 应用程序运行，但它给了我一个错误:

Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
    Unhandled exception type ECException 

关于:

PGDirTestController.performExecute();

请放轻松，我对 Java 还很陌生。

Answer 1

自您声明以来:

public void performExecute() throws ECException 

然后你被迫处理ECException。

因此，当您调用它时，应该用 try-catch 包围它，或者声明调用它的方法以抛出异常:

public static void main(String[] args) {
      XGetProgramGuideDirectTestControllerCmdImpl PGDirTestController = new 
               XGetProgramGuideDirectTestControllerCmdImpl();
      try {
          PGDirTestController.performExecute();
      } catch(ECException e) { 
            e.printStackTrace();
            //Handle the exception!
        }
}

或者

public static void main(String[] args) throws ECException {
     XGetProgramGuideDirectTestControllerCmdImpl PGDirTestController = new 
              XGetProgramGuideDirectTestControllerCmdImpl();
     PGDirTestController.performExecute();
}