小编Cou*_*udy的帖子

我正在Intellij IDEA 13.1.4社区版中创建新的应用程序

我可以在IDE中运行我的应用程序,但是,当我创建jar时,执行后我得到错误:

java.awt.IllegalComponentStateException: contentPane cannot be set to null.
at javax.swing.JRootPane.setContentPane(JRootPane.java:620)
at javax.swing.JDialog.setContentPane(JDialog.java:1045)
at MainDialog.<init>(MainDialog.java:39)
at MainDialog.createAndShowUI(MainDialog.java:193)
at MainDialog.access$1200(MainDialog.java:13)
at MainDialog$13.run(MainDialog.java:184)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:694)
at java.awt.EventQueue$3.run(EventQueue.java:692)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

我试图在google/stackoverflow上搜索

• 如何在Netbeans中使用jetbrains布局启动swing应用程序
• http://grahamedgecombe.com/blog/using-intellij-ideas-javac2-in-gradle
• Intellij Idea 13 UI Designer和自动Gradle构建

并在最后一篇文章中附上链接

这是我的MainDialog.java示例代码

    public static void main(String[] args) {

    java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            createAndShowUI();
        }
    });
}

private …