Java.....!!!!!!!!!!!

In this post, i will point out my understanding about hashCode() and equals() method. I will talk about their default implementation and how to correctly override them. I will also write about implement these methods using Apache Commons package’s utility classes. Sections in this post: 1.        Usage of hashCode() and equals() 2.        Overriding the default behavior 3.        Overriding hashCode() and equals() using Apache Commons Lang 4.        Important things to remember 5.        Special Attention When Using in ORM hashCode()  and  equals()  methods have been defined in Object class which is parent class for java objects. For this reason, all java objects inherit a default implementation of these methods. Usage of hashCode() and equals() hashCode() method is used to get a unique integer for gi...