小编Tyl*_*uur的帖子

我通过这样做来设定我的外观和感觉

private void setSubstanceSkin(String theme) {
    try {
        UIManager.setLookAndFeel(new SubstanceBusinessBlackSteelLookAndFeel());
        JFrame.setDefaultLookAndFeelDecorated(true);
        JDialog.setDefaultLookAndFeelDecorated(true);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

但是我得到了这个堆栈跟踪:

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: javax.swing.plaf.metal.MetalRootPaneUI cannot be cast to org.jvnet.substance.SubstanceRootPaneUI
at org.jvnet.substance.utils.SubstanceCoreUtilities.getTitlePane(SubstanceCoreUtilities.java:3590)
at org.jvnet.substance.title.ImageWrapperHeaderPainter.paintExtraBackground(ImageWrapperHeaderPainter.java:172)
at org.jvnet.substance.SubstanceFillBackgroundDelegate.update(SubstanceFillBackgroundDelegate.java:198)
at org.jvnet.substance.SubstanceMenuBarUI.__org__jvnet__substance__SubstanceMenuBarUI__container__update(SubstanceMenuBarUI.java:251)
at org.jvnet.substance.SubstanceMenuBarUI.update(SubstanceMenuBarUI.java)
at javax.swing.JComponent.paintComponent(JComponent.java:778)
at javax.swing.JComponent.paint(JComponent.java:1054)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:585)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5228)
at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1482)
at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1413)
at javax.swing.RepaintManager.paint(RepaintManager.java:1206)
at javax.swing.JComponent.paint(JComponent.java:1040)
at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:39)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:78)
at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:115)
at java.awt.Container.paint(Container.java:1967)
at java.awt.Window.paint(Window.java:3877)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:781)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:728)
at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:677) …

我正在研究一个用java自动输入内容的系统.这是我写它的方式:

public void typeMessage(String message) {
    for (char c : message.toCharArray()) {
        int code = c;
        if (code > 96 && code < 123) 
            code = code - 32;
        if (c == '@') {
            robot.keyPress(VK_SHIFT);
            robot.keyPress(VK_AT);
            robot.keyRelease(VK_SHIFT);
            robot.keyRelease(VK_AT);
        } else {
            type(code);
        }
    }
    type(VK_ENTER);
}

但是我收到了这个错误:

    Exception in thread "Thread-2" java.lang.IllegalArgumentException: Invalid key code

上

    robot.keyPress(VK_AT);