. (member) operator
The member operator is used to access a field or method of an object reference, or to access a static method of a class. At the left-hand side of the operator, there must be either an object reference or a class name. At the right-hand side, there must be the name of a field or method of the object, or the name of a static method if used with a class name.
The return value is the field or method that is accessed. Examples:
MyClass c = new MyClass c.field1 = c.field2 ; Field access c.doSomething(c.getValue()) ; Method access MyClass.doStatic() ; Static method access