Using the boolean type : Boolean « Data Type « Java Tutorial

public class MainClass {
  public static void main(String args[]) {
    boolean b;
    b = false;
    System.out.println("b is " + b);
    b = true;
    System.out.println("b is " + b);
    // a boolean value can control the if statement
    if(b) System.out.println("This is executed.");
    b = false;
    if(b) System.out.println("This is not executed.");
    // outcome of a relational operator is a boolean value
    System.out.println("10 > 9 is " + (10 > 9));
b is false
b is true
This is executed.
10 > 9 is true

2.2.2.Java boolean value
2.2.3.Boolean Data Type
2.2.4.Boolean Literals
2.2.5.Boolean Variables
2.2.6.Using the boolean type
2.2.7.valueOf(): parse a String to a Boolean object
2.2.8.toString(): return the string representation of a boolean
2.2.9.Convert String to Boolean
2.2.10.Convert Boolean to String
2.2.11.Convert Java boolean Primitive to Boolean object
2.2.12.Convert Java String Object to Boolean Object
2.2.13.Create an Boolean object from boolean value
2.2.14.Compare Two Java boolean Arrays Example
2.2.15.Convert integer to boolean
2.2.16.Convert boolean to integer
2.2.17.Convert boolean value to Boolean
2.2.18.Create a boolean variable from string
2.2.19.Autoboxing/unboxing a Boolean and Character.
2.2.20.Converts a String to a Boolean.
2.2.21.Converts a boolean to a String returning 'yes' or 'no'
2.2.22.Converts an Integer to a boolean specifying the conversion values.
2.2.23.Converts an int to a boolean specifying the conversion values.
2.2.24.Performs an xor on a set of booleans.