eclipse - java externals jars not included when using maven? -

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folks,

i new java. have seen including external jars , compile that. external jars contains lot of class files. when include these external jars in project , if create new jar, can see these external jars included part of jar file.

but have seen cases in these external jars not included part of jar file when using maven ? why ? (example, when write hadoop map reduce programs in java, referring lot of external jars none of these external jars included in final jar create project.)

thanks, john

if want external libraries packaged in jar, need use tool onejar. there maven plugin onejar @ https://code.google.com/p/onejar-maven-plugin/.


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