java.lang.NullPointerException

Visual-paradigm | Siri | 1 decade ago
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    Why I cannot input text into system response column in Use Case description

    Visual-paradigm | 1 decade ago | Siri
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at javax.swing.plaf.basic.BasicEditorPaneUI.getEditorKit()
    2. Java RT
      DocumentFilter.replace
      1. javax.swing.plaf.basic.BasicEditorPaneUI.getEditorKit(Unknown Source)
      2. javax.swing.plaf.basic.BasicTextUI$RootView.getViewFactory(Unknown Source)
      3. javax.swing.plaf.basic.BasicTextUI$UpdateHandler.removeUpdate(Unknown Source)
      4. javax.swing.text.AbstractDocument.fireRemoveUpdate(Unknown Source)
      5. javax.swing.text.AbstractDocument.handleRemove(Unknown Source)
      6. javax.swing.text.AbstractDocument$DefaultFilterBypass.replace(Unknown Source)
      7. javax.swing.text.DocumentFilter.replace(Unknown Source)
      7 frames