There are lot of differences between instance variable, class variable and local variable in Java and knowing them will help you to write correct and bug free Java programs. Java is full featured programming language and provides different kind of variables like static variable also called Class variable since it belongs to whole Class, non static also called instance variable and local variables which varies in scope and value. Thank god Java doesn't have any register variable or auto scope like C otherwise it would have so much detail to remember. static variables are common source of error in may multi-threaded java program and does require a bit of carefulness while using it. On the other hand instance variable and local variable has less sharing visibility than static variable.
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Rabu, 01 Februari 2012
core java
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