java.lang.StringIndexOutOfBoundsException: String index out of range: 4
        at java.lang.AbstractStringBuilder.getChars(AbstractStringBuilder.java:325)
        at java.lang.StringBuffer.getChars(StringBuffer.java:201)
        at org.netbeans.core.output2.OutputDocument.getText(OutputDocument.java:180)
        at javax.swing.text.DefaultCaret$Handler.insertUpdate(DefaultCaret.java:1689)
        at org.netbeans.core.output2.OutputDocument.fireDocumentEvent(OutputDocument.java:492)
        at org.netbeans.core.output2.OutputDocument.sendLine(OutputDocument.java:251)
        at org.netbeans.core.output2.OutputPane$2.actionPerformed(OutputPane.java:254)
        at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1636)
        at javax.swing.JComponent.processKeyBinding(JComponent.java:2844)
        at javax.swing.JComponent.processKeyBindings(JComponent.java:2879)
        at javax.swing.JComponent.processKeyEvent(JComponent.java:2807)
        at java.awt.Component.processEvent(Component.java:5815)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4410)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1848)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:693)
        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:958)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:830)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:657)
        at java.awt.Component.dispatchEventImpl(Component.java:4282)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Window.dispatchEventImpl(Window.java:2429)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
[catch] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)