Package org.apache.hadoop.conf does not exist

You can run it like following:

javac WordCount.java -cp $(hadoop classpath)

If you get following error for this:

zsh: command not found: hadoop

javac: -cp requires an argument

You can try to find exact location of hadoop, as following worked for me, as I had installed in Mac using brew(It will be different in Linux):

javac WordCount.java -cp $(/usr/local/Cellar/hadoop/2.8.0/bin/hadoop classpath)

The hadoop classpath provides the compiler with all the paths it needs to compile correctly and you should see a resulting WordCount.class appear in the directory.

I too have Hadoop 2.7.1 and I am able to compile WordCount.

All your missing packages are from hadoop-common and hadoop-core jars.

You need to have following Maven dependencies included in your pom.xml (I just have following dependencies and it compiles for me):

<dependencies>    <dependency>        <groupId>org.apache.hadoop</groupId>        <artifactId>hadoop-hdfs</artifactId>        <version>2.7.1</version>    </dependency>    <dependency>        <groupId>org.apache.hadoop</groupId>        <artifactId>hadoop-common</artifactId>        <version>2.7.1</version>    </dependency>    <dependency>        <groupId>org.apache.hadoop</groupId>        <artifactId>hadoop-core</artifactId>        <version>1.2.1</version>    </dependency></dependencies>