java.lang.NullPointerException

Oracle Community | 807541 | 1 decade ago
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  1. 0

    question about Groupable Header for JTable

    Oracle Community | 1 decade ago | 807541
    java.lang.NullPointerException
  2. 0

    How to create complecated Header for JTable in a JApplet ?

    Oracle Community | 1 decade ago | 807582
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at GroupableTableHeaderUI.getHeaderHeight()
    2. Unknown
      GroupableTableHeaderUI.getPreferredSize
      1. GroupableTableHeaderUI.getHeaderHeight(GroupableTableHeaderUI.java:87)
      2. GroupableTableHeaderUI.createHeaderSize(GroupableTableHeaderUI.java:108)
      3. GroupableTableHeaderUI.getPreferredSize(GroupableTableHeaderUI.java:118)
      3 frames
    3. Java RT
      Component.setVisible
      1. javax.swing.JComponent.getPreferredSize(JComponent.java:1272)
      2. javax.swing.ViewportLayout.preferredLayoutSize(ViewportLayout.java:75)
      3. java.awt.Container.preferredSize(Container.java:1175)
      4. java.awt.Container.getPreferredSize(Container.java:1159)
      5. javax.swing.JComponent.getPreferredSize(JComponent.java:1274)
      6. javax.swing.ScrollPaneLayout.layoutContainer(ScrollPaneLayout.java:702)
      7. java.awt.Container.layout(Container.java:1017)
      8. java.awt.Container.doLayout(Container.java:1007)
      9. java.awt.Container.validateTree(Container.java:1089)
      10. java.awt.Container.validateTree(Container.java:1096)
      11. java.awt.Container.validateTree(Container.java:1096)
      12. java.awt.Container.validateTree(Container.java:1096)
      13. java.awt.Container.validateTree(Container.java:1096)
      14. java.awt.Container.validate(Container.java:1064)
      15. java.awt.Window.show(Window.java:450)
      16. java.awt.Component.show(Component.java:1134)
      17. java.awt.Component.setVisible(Component.java:1089)
      17 frames
    4. Unknown
      GroupableHeaderExample.main
      1. GroupableHeaderExample.main(GroupableHeaderExample.java:66)
      1 frame