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Variables in Java

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Variables in Java ? Variables are the  basic requirements  in any program be it Java,Python or  JavaScript .It is the basic unit of storage. It acts as a container and is used to hold data values. The values held by the variable can be changed during the execution of the program. Every variable is assigned a data type. Variable, in simpler terms, is a name given to a memory location.  Variable Declaration and Initialization           A variable is declared by specifying the following parameters: ·         Datatype:  The type of data that is stored in the variable. ·         Variable name:  The unique name given to the variable. ·         Value:  The initial value stored in the variable.   Variables naming convention in java      Variable...
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What is Java ?

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Introduction to java : Java is a programming language and computing platform first released by Sun Microsystems in 1995.    It is intended to let application developers  “write once, run anywhere” (WORA) , meaning that compiled Java code can run on all platforms that support Java without the need for recompilation. It is used for: Mobile applications (specially Android apps) Desktop applications Web applications Web servers and application servers Games Database connection And much, much more!
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Types of variables in java

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Types of Variables in Java There are three types of variables in Java    Local variable  Static (or class) variable Instance variable Local variable : These are also called as stack variable. Because they exist in stack memory variable declared inside the body of the method is called local variable. You can use this variable only within that method and the other methods in the class aren't even aware that the variable exists. local variable cannot be defined with " static " keyword. Instance variable: Instance variable are also known as member variable or field A variable declared inside the class but outside the body of the method, is called instance variable. It is not declared as static. Class Variable/Static Variable: • These are loaded and initialized when class is loaded in JVM • There exists only one copy of class variable
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