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via Oracle Community by 807553, 1 year ago
This exception has no message.
java.lang.NullPointerException: 	at terms.Terms$SortCompareTerms.compare(TermsApp.java:237)	at java.util.Arrays.mergeSort(Arrays.java:1181)	at java.util.Arrays.mergeSort(Arrays.java:1188)	at java.util.Arrays.mergeSort(Arrays.java:1188)	at java.util.Arrays.mergeSort(Arrays.java:1188)	at java.util.Arrays.mergeSort(Arrays.java:1188)	at java.util.Arrays.mergeSort(Arrays.java:1188)	at java.util.Arrays.mergeSort(Arrays.java:1188)	at java.util.Arrays.mergeSort(Arrays.java:1188)	at java.util.Arrays.sort(Arrays.java:1128)	at terms.Terms.(TermsApp.java:117)	at terms.TermsApp.main(TermsApp.java:15)