global variable : Java Glossary

by Roedy Green ©1996-2008 Canadian Mind Products
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global variable: Java does not support global, universally accessible variables. You can get the same sorts of effects with classes that have static variables, static {.. } style initialisation of static variables, or sometimes constants in the form of static final variables inside interfaces. Java avoids polluting the namespace by making you refer to such “globals” by preceding them with a class name, e.g. Math.PI, or MyClass.useCount, unless of course your class inherits or implements the class or interface that defines the “global”.

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