Wrapper Classes: (Core JAVA)

·         Java provides wrapper class to convert primitive type to an object type

·         For every primitive type in java, we have wrapper classes

·         All wrapper classes are available in package “java.lang”. The numeric related wrapper classes are inherited from number class which is abstract class. All the abstract classes are final classes

·         In each wrapper class toString() method, equals() method and hashcode() method are overrided

·         Converting primitive type to object type is known as Boxing operation. This boxing operation is done by using wrapper classes

·         Converting a boxed object back to primitive type is known as unboxing operation

·         If the compiler does the boxing by its own then it will known as Autoboxing

·         Each wrapper class provides method to get primitive vale for e.g., int value ,float value etc

·         In an array of object type whenever any element is added all the data are casted to object type