嵌套的SWT消息框给出错误

Question

public class MesssageBoxQuestionIconYESNOButton { 

public static void main(String[] args) { 
    Display display = new Display(); 
    Shell shell = new Shell(display); 

    //This is added to be able to run JUnit in this java class 
    JUnitCore junit = new JUnitCore(); 
    Result result; 

    int style = SWT.ICON_WARNING | SWT.YES | SWT.NO; 


    MessageBox messageBox = new MessageBox(shell, style); 
    messageBox.setMessage("Would you like to start the test?"); 
    int rc = messageBox.open(); 

    if(rc == SWT.YES) 
    { 
      //Must add in the .class else it will not work 
      result = junit.run(testMyCode.class); 

     //This part is to ask if the user want to repeat the test again 
      Display display1 = new Display(); 
      Shell shell1 = new Shell(display); 

      int style1 = SWT.ICON_WARNING | SWT.YES | SWT.NO; 

      MessageBox messageBox1 = new MessageBox(shell, style); 
      messageBox1.setMessage("Would you like to repeat the test?"); 
      int rc1 = messageBox.open(); 

      if(rc1 == SWT.YES) 
      { 
       result = junit.run(testMyCode.class); 
      } 
      else 
      { 
       MessageBox messageBox2 = new MessageBox(shell, style); 
       messageBox2.setMessage("Thank You For Using"); 
       display1.dispose(); 
      } 
    } 
    else 
    { 
     display.dispose(); 
    } 
} 
} 

这是我目前拥有的代码。 原来这就是我想要做的：

1. 询问用户是否要开始测试
2. 如果是的话，运行JUnit测试
3. JUnit测试完成后。询问用户是否要再次重复测试

因此，在此代码中，一切正常，直到第3步。

这是我收到的错误：

Exception in thread "main" org.eclipse.swt.SWTException: Invalid thread access 
at org.eclipse.swt.SWT.error(Unknown Source) 
at org.eclipse.swt.SWT.error(Unknown Source) 
at org.eclipse.swt.SWT.error(Unknown Source) 
at org.eclipse.swt.widgets.Display.checkDisplay(Unknown Source) 
at org.eclipse.swt.widgets.Display.create(Unknown Source) 
at org.eclipse.swt.graphics.Device.<init>(Unknown Source) 
at org.eclipse.swt.widgets.Display.<init>(Unknown Source) 
at org.eclipse.swt.widgets.Display.<init>(Unknown Source) 

谁能帮我看看有什么不好？谢谢

Answer 1

错误是通过创建一个新Display ......造成
我做了一些修改，也因此尝试这样的事情（这是从来没有使用过，顺便说一句。）：

public static void main(final String[] args) 
{ 
    final Display display = new Display(); 
    final Shell shell = new Shell(display); 

    // This is added to be able to run JUnit in this java class 
    final JUnitCore junit = new JUnitCore(); 
    Result result; 

    final int style = SWT.ICON_WARNING | SWT.YES | SWT.NO; 

    final MessageBox messageBox = new MessageBox(shell, style); 
    messageBox.setMessage("Would you like to start the test?"); 
    int rc = messageBox.open(); 

    if (rc == SWT.YES) 
    { 
     // Must add in the .class else it will not work 
     result = junit.run(testMyCode.class); 

     // This part is to ask if the user want to repeat the test again 
     final MessageBox messageBox1 = new MessageBox(shell, style); 
     messageBox1.setMessage("Would you like to repeat the test?"); 
     rc = messageBox1.open(); 

     if (rc == SWT.YES) 
     { 
      result = junit.run(testMyCode.class); 
     } 
     int style1 = SWT.ICON_WARNING | SWT.OK; 
     final MessageBox messageBox2 = new MessageBox(shell, style1); 
     messageBox2.setMessage("Thank You For Using"); 
     messageBox2.open(); 
    } 
    display.dispose(); 
} 

Answer 2

public static void main(final String[] args) 
{ 
    final Display display = new Display(); 
    final Shell shell = new Shell(display); 

    // This is added to be able to run JUnit in this java class 
    final JUnitCore junit = new JUnitCore(); 
    Result result; 

    final int style = SWT.ICON_WARNING | SWT.YES | SWT.NO; 

    final MessageBox messageBox = new MessageBox(shell, style); 
    messageBox.setMessage("Would you like to start the test?"); 
    int rc = messageBox.open(); 

    if (rc == SWT.YES) 
    { 
     // Must add in the .class else it will not work 
     result = junit.run(testMyCode.class); 

     // This part is to ask if the user want to repeat the test again 
     final MessageBox messageBox1 = new MessageBox(shell, style); 
     messageBox1.setMessage("Would you like to repeat the test?"); 
     int rc2 = messageBox1.open(); 

     if (rc2 == SWT.YES) 
     { 
      result = junit.run(testMyCode.class); 
     } 
     else 
     { 
     int style1 = SWT.ICON_WARNING | SWT.OK; 
     final MessageBox messageBox2 = new MessageBox(shell, style1); 
     messageBox2.setMessage("Thank You For Using"); 
     messageBox2.open(); 
     } 
    } 
    display.dispose(); 
} 

您还需要更改rc