The || operator or conditional OR operator operates on two boolean expressions. This operator exhibit “short-circuiting” behavior, which means that the second operand is evaluated only if needed.
The || operator evaluate only boolean values. For an OR (||) expression it will return true if either of the operand is true. If the first operand resolves true, then the second operand will not evaluate, because the complete expression will return true.
package org.kodejava.basic;
public class ConditionalORDemo {
public static void main(String[] args) {
// the second operand (5<3) is not evaluated, because the
// first operand return true, the result of complete
// expression will be true
boolean a = (1 == 1) || (5 < 3);
// the first operand return false, the second operand is
// evaluated to check the result of the second expression.
// If the second operand resolves to true, the complete
// expression return true, otherwise return false.
boolean b = (5 < 3) || (2 == 3);
boolean c = (5 < 3) || (1 == 1);
System.out.println("result a: " + a);
System.out.println("result b: " + b);
System.out.println("result c: " + c);
}
}
The program prints the following output:
result a: true
result b: false
result c: true
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