June 2012
Intermediate to advanced
288 pages
6h 48m
English
Content preview from Java For Dummies Quick Reference
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boolean Data Type
A boolean
type can have one of two values: true or false. A boolean is used to perform logical operations, most commonly to determine whether some condition is true. For example:
boolean enrolled = true;
boolean credited = false;
Here, a variable named enrolled of type boolean is declared and initialized to a value of true, and another boolean named credited is declared and initialized to false.
In some languages, such as C or C++, integer values can be treated as a boolean, with 0 equal to false and any other value equal to true. Not so in Java. In Java, you can’t convert between an integer type and a boolean type.
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