The Java language is the most widely used programming language, powerful and easy to use,
Founder of Hadoop, Doug Cutting once said: "in Java developer productivity and achieve a good trade-off between efficiency and widespread developers can use the high quality of class libraries, immediate benefit from this kind of simple, powerful, type-safe language,
There is no big data, without Hadoop no Java no Hadoop,
Many big data framework are written in the Java language,
Many big data framework provides a Java related API,