Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Oracle Community by 807577, 1 year ago
This exception has no message.
java.lang.NullPointerException at Kmeans.update(Kmeans.java:468) at Kmeans.paint(Kmeans.java:520) at javax.swing.JComponent.paintChildren(JComponent.java:523) at javax.swing.JComponent.paint(JComponent.java:748) at javax.swing.JComponent.paintChildren(JComponent.java:523) at javax.swing.JComponent.paint(JComponent.java:748)