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Instance Variable With Example In JAVA

An instance variable is a variable defined in a class (i.e. a member variable) in which each instantiated object of the class has a separate copy, or instance. An instance variable is similar to a class variable. Instance variables belong to an instance of a class. It means instance variables belong to an object and we know that an object is an … Continue reading Instance Variable With Example In JAVA

Local Variable With Example In JAVA

A local variable is a variable declared inside a method body, block or constructor. It means variable is only accessible inside the method, block or constructor that declared it. Important Note: In java, a block i.e. “area between opening and closing curly brace” defines a scope. Each time you start a new block, you begin … Continue reading Local Variable With Example In JAVA

ArrayList All Methods In Java With Example

Regular Arrays are of predetermined length, that is we have to predefine the size of array in advance, but in some cases we don’t know in advance the size of array, so there was a need to have something which can be initialized first but later its size can be changed dynamically. Hence, ArrayList class … Continue reading ArrayList All Methods In Java With Example

Byte With Examples And Program In JAVA

The smallest integer data type is byte. Byte type variables are especially useful when you are working with a stream of data from a network or a file. They are also useful when you are working with raw binary data that may not be directly compatible with Java’s other built-in types. Keyword “byte” is used to declare byte variables. … Continue reading Byte With Examples And Program In JAVA