java小程序文件打开对话框npe

Question

我在jre6中使用的小程序代码中得到了这个堆栈跟踪。0.33+但在7.025中失败。有人能帮我理解原因并纠正吗

   Exception in thread "AWT-EventQueue-2" java.lang.NullPointerException
    at sun.awt.SunToolkit.getSystemEventQueueImplPP(Unknown Source)
    at sun.awt.SunToolkit.getSystemEventQueueImplPP(Unknown Source)
    at sun.awt.SunToolkit.getSystemEventQueueImpl(Unknown Source)
    at java.awt.Toolkit.getEventQueue(Unknown Source)
    at java.awt.EventQueue.isDispatchThread(Unknown Source)
    at javax.swing.SwingUtilities.isEventDispatchThread(Unknown Source)
    at javax.swing.JComponent.revalidate(Unknown Source)
    at javax.swing.JTable.resizeAndRepaint(Unknown Source)
    at javax.swing.JTable.sortedTableChanged(Unknown Source)
    at javax.swing.JTable.sorterChanged(Unknown Source)
    at javax.swing.RowSorter.fireRowSorterChanged(Unknown Source)
    at javax.swing.RowSorter.fireRowSorterChanged(Unknown Source)
    at javax.swing.DefaultRowSorter.sort(Unknown Source)
    at sun.swing.FilePane$DetailsTableRowSorter.access$1601(Unknown Source)
    at sun.swing.FilePane$DetailsTableRowSorter$1.call(Unknown Source)
    at sun.swing.FilePane$DetailsTableRowSorter$1.call(Unknown Source)
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at sun.awt.shell.Win32ShellFolderManager2$ComInvoker$3.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

Answer 1

罪过 是的，我应该忍住不读。问题在于对对话框进行排序。我接受我的不服惩罚。我希望我仍然可以张贴天真，尽管他们是。请注意，这不是讽刺，即使是在压力下的声明

Answer 2

我也得到了同样的结果，根据this forum post，这显然是this bug的“化身”。它似乎是固定的，但仅在JDK8版本中。OTOH，似乎有一个“苹果补丁”修复了JDK 7（可能是）中的这个问题（但只针对苹果用户）