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 Eclipse Bugzilla by nan.n.li, 1 year ago
via Oracle Community by 807596, 1 year ago
This exception has no message.
via Coderanch by sai prasanna, 1 year ago
This exception has no message.
via Netbeans Bugzilla by jiriprox, 1 year ago
via Oracle Community by 807601, 6 months ago
This exception has no message.
java.lang.NullPointerException: 	at java.lang.String.compareTo(Unknown Source)	at java.lang.String.compareTo(Unknown Source)	at java.util.Arrays.mergeSort(Unknown Source)	at java.util.Arrays.sort(Unknown Source)	at DecisionTree.calculateSplit(DecisionTree.java:135)	at DecisionTree.(DecisionTree.java:46)	at FileChooser.createDecisionTree(FileChooser.java:194)	at FileChooser.actionPerformed(FileChooser.java:53)