Functional Interfaces in Java In Java, being an object oriented programming language, everything revolves around Objects and classes.If we want to write a simple one statement for displaying a message using System.out.print then also we need to write a class to have such method.Means we can’t write any function/method without writing a class in java. … Read more
Exception Handling Exception is an abnormal condition in a java program which disrupts the normal flow the program.Few examples are bad coding, wrong input data, network connectivity issue etc. Technically exception is and object that contains the exceptional details like error message and line at which issue has happened etc.When such a situation arise in … Read more
Java Arrays An array is a data structure which will store only homogeneous elements.That means all the elements stored in an array would be of same data type. For example if we create an array of string then all the elements which can be stored would be of type String only.Other data types like int,long … Read more
ArrayList in Java ArrayList provides the dynamic array for storing the elements. ArrayList is a class in Java collection framework.It comes under java.util package. Need for ArrayList: We use ArrayList when we need to do lot of modifications to the elements. Feature of ArrayList: 1)ArrayList is similar to Array but there is no limit on … Read more
As we know every java object has a state.By state we mean the values stored in the instance variables of that object.When we want to transfer that object,we need to convert the state of object so that we can send that object. Serialization is the process of converting state of an object into a byte … Read more