java - EDT和运行时异常

在重新启动之前，EDT是否会关闭之前显示的所有组件？

不，EDT只是像以前一样恢复执行Runnable个实例;破碎的Runnable继续抛出异常。作为练习，请检查调试器中的example cited。

附录：这是此example的典型堆栈跟踪。

chart.DTSCTest$1.actionPerformed(DTSCTest.java:53)
javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
java.awt.Component.processMouseEvent(Component.java:6373)
javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
java.awt.Component.processEvent(Component.java:6138)
java.awt.Container.processEvent(Container.java:2085)
java.awt.Component.dispatchEventImpl(Component.java:4735)
java.awt.Container.dispatchEventImpl(Container.java:2143)
java.awt.Component.dispatchEvent(Component.java:4565)
java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4621)
java.awt.LightweightDispatcher.processMouseEvent(Container.java:4282)
java.awt.LightweightDispatcher.dispatchEvent(Container.java:4212)
java.awt.Container.dispatchEventImpl(Container.java:2129)
java.awt.Window.dispatchEventImpl(Window.java:2478)
java.awt.Component.dispatchEvent(Component.java:4565)
java.awt.EventQueue.dispatchEventImpl(EventQueue.java:679)
java.awt.EventQueue.access$000(EventQueue.java:85)
java.awt.EventQueue$1.run(EventQueue.java:638)
java.awt.EventQueue$1.run(EventQueue.java:636)
java.security.AccessController.doPrivileged(AccessController.java)
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
java.awt.EventQueue$2.run(EventQueue.java:652)
java.awt.EventQueue$2.run(EventQueue.java:650)
java.security.AccessController.doPrivileged(AccessController.java)
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
java.awt.EventQueue.dispatchEvent(EventQueue.java:649)
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

默认情况下，如果未捕获异常，则会将堆栈跟踪写入控制台输出。整个GUI不会变得没有响应（但是，正如垃圾桶评论，特定组件可能保持不自然状态），EDT继续工作：Does the EDT restart or not when an exception is thrown?

好的做法是设置一个未捕获的异常处理程序，因为你想知道是否出了什么问题。请注意（取决于Java版本），对于EDT而言，这可能与其他线程的功能不同：

How can I detect when an Exception's been thrown globally in Java?

请注意＆＃34; sun.awt.exception.handler＆＃34;许多SO帖子中提到的技巧不是必需的，在Java 7中不起作用。对于Java 7，只需使用标准的Thread.setDefaultUncaughtExceptionHandler。当然，如果您使用这两种机制来注册异常处理程序，则代码将适用于所有版本。

EDT和运行时异常

2 个答案: