Android How to Program, 3/e

C.20 Logical Operators

Java’s logical operators enable you to form more complex conditions by combining simple conditions. The logical operators are && (conditional AND), || (conditional OR), & (boolean logical AND), | (boolean logical inclusive OR), ^ (boolean logical exclusive OR) and ! (logical NOT). [Note: The &, | and ^ operators are also bitwise operators when they’re applied to integral operands.]

Conditional AND (&&) Operator

Suppose we wish to ensure at some point in a program that two conditions are both true before we choose a certain path of execution. In this case, we can use the && (conditional AND) operator, as follows:

if ( gender == FEMALE && age >= 65 )
   ++seniorFemales;

This if statement contains two simple conditions. ...