Answer Posted / sarbbottam bandyopadhyay

System is a class, which belongs to package java.lang
out is a class variable (static final field) of system class of PrintStream class.
PrintStream class has the method println().
The return type of println() is void and has overloading.
Please refer to the API documentation of System class.
http://download.oracle.com/javase/1.4.2/docs/api/java/lang/System.html

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