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   ► KBProgrammingJavaStandard JavaTool Basics   Print This     
 
Java Tool Basics:
Java Variables (int x = 0;)
 
Posted 16 years ago on 11/10/2008 and updated 1/16/2009
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 Tags: Java , Variables

KB101578

Languages Focus: Variables

A variable holds a value that you can use and change throughout your code so long as the variable is within scope. With variable declaration, you not only want to know the syntax of how you declare a variable but you also want to know where. Are you allowed to declare a variable inline? What are the available scopes: local vs. global. Can you assign a value at the same time you declare a variable?

Java Variables

Variable names are case sensitive.

The Java basic types are boolean, byte, short, int, long, float, double, and char. You can also declare a variable to hold a particular instance of a class such as String.

Syntax Example:

C++, Java, and C# all use C-like variable declaration.

int a;
int a, b;
int age = 43;
String FullName;

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Code Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

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