Java has a boolean type for logical values. It can have only one of two possible values, true or false.
This is the type returned by all relational operators.
Here is a program that demonstrates the boolean type:
public class Main {
public static void main(String args[]) {
boolean boolVariable;
boolVariable = false;
System.out.println("b is " + boolVariable);
boolVariable = true;
System.out.println("b is " + boolVariable);
if (boolVariable) {
System.out.println("This is executed.");
}
boolVariable = false;
if (boolVariable) {
System.out.println("This is not executed.");
}
System.out.println("10 > 9 is " + (10 > 9));
}
}
Output:
b is false
b is true
This is executed.
10 > 9 is true