java.lang.NullPointerException
   at javax.swing.plaf.basic.BasicTextUI.viewToModel(BasicTextUI.java:1106)
   at javax.swing.plaf.basic.BasicTextUI.viewToModel(BasicTextUI.java:1079)
   at javax.swing.text.JTextComponent.viewToModel(JTextComponent.java:1432)
   at org.netbeans.lib.editor.hyperlink.HyperlinkOperation.keyPressed(HyperlinkOperation.java:385)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:249)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:249)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:249)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:249)
   at java.awt.Component.processKeyEvent(Component.java:6133)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2801)
   at java.awt.Component.processEvent(Component.java:5952)
   at java.awt.Container.processEvent(Container.java:2105)
   at java.awt.Component.dispatchEventImpl(Component.java:4536)
   at java.awt.Container.dispatchEventImpl(Container.java:2163)
   at java.awt.Component.dispatchEvent(Component.java:4362)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1881)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:749)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1025)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:892)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:713)
   at java.awt.Component.dispatchEventImpl(Component.java:4406)
   at java.awt.Container.dispatchEventImpl(Container.java:2163)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4362)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:604)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:148)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)