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Abstract class in Java A class which is declared with the abstract keyword is known as an …

Interface in Java Interface Example of Interface Multiple inheritance by Interface Why mul…

Difference between abstract class and interface Abstract class and interface both are used…

Java Package Java Package Example of package Accessing package By import packagename.* By …

Access Modifiers in Java Private access modifier Role of private constructor Default acces…

Encapsulation in Java Encapsulation in Java is a process of wrapping code and data togethe…

Java Arrays Normally, an array is a collection of similar type of elements which has conti…

Object Cloning in Java The object cloning is a way to create exact copy of an object. The …

Wrapper classes in Java The wrapper class in Java provides the mechanism to convert primit…

Call by Value and Call by Reference in Java There is only call by value in java, not call …