java.lang.NullPointerException

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  • Java error
    via by Donna Harrington,
    • java.lang.NullPointerException at addTitle.actionPerformed(addTitle.java:218) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1764) at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1817)
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