java.lang.NullPointerException

Coderanch | Emili Calonge | 1 decade ago
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    JFileChooser showing twice

    Coderanch | 1 decade ago | Emili Calonge
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at grafic.Prueba.actionPerformed()
    2. grafic
      Prueba.actionPerformed
      1. grafic.Prueba.actionPerformed(Prueba.java:336)
      1 frame
    3. Java RT
      BasicMenuItemUI$Handler.mouseReleased
      1. javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
      2. javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
      3. javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
      4. javax.swing.DefaultButtonModel.setPressed(Unknown Source)
      5. javax.swing.AbstractButton.doClick(Unknown Source)
      6. javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
      7. javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown Source)
      7 frames