Exception in thread “main“ java.lang.UnsupportedClassVersionError: com/hadoop/hadoop_test/WordCount

[hadoop@hadoop01 hadoop]$ bin/hadoop jar wc1.jar com.hadoop.hadoop_test.WordCount /test/wd.txt /test/out3Exception in thread "main" java.lang.UnsupportedClassVersionError: com/hadoop/hadoop_test/WordCount has been compiled by a more recent version of .