SeaGlass LAF を使用している場合はすべて問題ありませんが、RSyntaxTextArea パッケージのオブジェクトを含むページをリクエストするとエラーが発生します。ニンバスに問題はなく、すべてが完全に機能します... 注: このメソッドを使用します私のプログラムのすべてのウィンドウのLAF全体を変更するためのメインクラス：
try {
UIManager.setLookAndFeel("com.seaglasslookandfeel.SeaGlassLookAndFeel");
} catch (Exception e) {
System.out.println("UIManager Exception : " + e);
}
プログラム全体が SeaGlass LAF を有効にします。各ウィンドウごとに手動で LAF を設定し、RSyntaxTextArea パッケージからオブジェクトを持つウィンドウを分離できますか?
スレッド「AWT-EventQueue-0」での例外 java.lang.NullPointerException at sun.font.FontDesignMetrics$MetricsKey.init(FontDesignMetrics.java:217) at sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:286) at sun. org.fife.ui.rtextarea.RTextAreaBase.updateMarginLineX(RTextAreaBase.java:1113) の javax.swing.JComponent.getFontMetrics(JComponent.java:1624) での swing.SwingUtilities2.getFontMetrics(SwingUtilities2.java:1012) .ui.rtextarea.RTextAreaBase.setFont(RTextAreaBase.java:939) org.fife.ui.rsyntaxtextarea.RSyntaxTextArea.setFont(RSyntaxTextArea.java:2170) で javax.swing.plaf.basic.BasicTextUI.installDefaults(BasicTextUI.java) :307) org.fife.ui.rtextarea.RTextAreaUI の javax.swing.plaf.basic.BasicTextAreaUI.installDefaults(BasicTextAreaUI.java:83) で。installDefaults(RTextAreaUI.java:350) で javax.swing.plaf.basic.BasicTextUI.installUI(BasicTextUI.java:787) org.fife.ui.rtextarea.RTextAreaUI.installUI(RTextAreaUI.java:407) で javax.swing org.fife.ui.rtextarea.RTextAreaBase.setRTextAreaUI(RTextAreaBase.java:1064) の javax.swing.text.JTextComponent.setUI(JTextComponent.java:338) の .JComponent.setUI(JComponent.java:664)。 fife.ui.rtextarea.RTextAreaBase.init(RTextAreaBase.java:622) org.fife.ui.rtextarea.RTextAreaBase.(RTextAreaBase.java:115) at org.fife.ui.rtextarea.RTextArea.(RTextArea.java: 216) org.fife.ui.rsyntaxtextarea.RSyntaxTextArea.(RSyntaxTextArea.java:347) で GUI.CodeEditorPage.(CodeEditorPage.java:31) で GUI.StartPage.WcodeActionPerformed(StartPage.java:375) で GUI.StartPage. access$900(StartPage.java:19) GUI.StartPage$10.actionPerformed(StartPage.java:162) で javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018) で javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341) で javax .swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) で javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) で javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) で java. awt.Component.processMouseEvent(Component.java:6505) で javax.swing.JComponent.processMouseEvent(JComponent.java:3321) で java.awt.Component.processEvent(Component.java:6270) で java.awt.Container.processEvent で(Container.java:2229) で java.awt.Component.dispatchEventImpl(Component.java:4861) で java.awt.Container で。dispatchEventImpl(Container.java:2287) で java.awt.Component.dispatchEvent(Component.java:4687) で java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832) で java.awt.LightweightDispatcher.processMouseEvent(Container.java) :4492) で java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422) で java.awt.Container.dispatchEventImpl(Container.java:2273) で java.awt.Window.dispatchEventImpl(Window.java:2719) で java .awt.Component.dispatchEvent(Component.java:4687)、java.awt.EventQueue.dispatchEventImpl(EventQueue.java:729)、java.awt.EventQueue.access$200(EventQueue.java:103)、java.awt.EventQueue $3.run(EventQueue.java:688) at java.awt.EventQueue$3.run(EventQueue.java:686) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) で java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) で java.awt.EventQueue$4.run(EventQueue.java:702) で java.awt.EventQueue$4 .run(EventQueue.java:700) で java.security.AccessController.doPrivileged(Native Method) で java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) で java.awt.EventQueue.dispatchEvent(EventQueue.java: 699) で java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242) で java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161) で java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150) で Java. awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146) java.java.awt.EventDispatchThread.run(EventDispatchThread.java:91) の awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)