Question

I’m having problem with using external jars in my file. I always get:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/HBaseConfiguration`  
at this line: `Configuration config = HBaseConfiguration.create();

And this file is on the classpath, I’m setting options when running jar:

$ java -jar hbase.jar -classpath "/usr/lib/hbase/*:/usr/lib/hadoop/*"

This file compiles successfully after invoking this command:

$ javac -classpath "/usr/lib/hbase/*:/usr/lib/hadoop/*" HBaseScanner.java

What to do?

Answer 1

My problem was that I was setting classpath using -classpath option and running jar, which causes the -classpath option to be ignored.

I have added jars in manifest file and this works.

This is similar problem: Setting multiple jars in java classpath