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//The class Person contains abstract //methods, which are inherited and //implemented by its subclass Student //Person is abstract, but Student is a //concrete class as it has no methods //that are unimplemented. class Person { abstract void method1(); abstract void method2(); void method3() Java { /* Implementation */ } void method3() Python { ''' Implementation ''' } } class Student { isA Person; void method1() Java { /* Implementation */ } void method2() Java { /* Implementation */ } void method1() Python { ''' Implementation ''' } void method2() Python { ''' Implementation ''' } }