I've just started using Hadoop and I tried this tutorial http://hadoop.apache.org/docs/r2.6.0/hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapReduceTutorial.html#Usage
but when I try to compile the Java program the error shows up.
I installed openjdk version "1.8.0_131", and my environment variables are
export JAVA_HOME=/usr/lib/jvm/default-java
export PATH=$JAVA_HOME/bin:$PATH
export HADOOP_CLASSPATH=$JAVA_HOME/lib/tools.jar
