java.lang.Boolean : Boolean « Data Type « Java Tutorial






  1. Java Tutorial
  2. Data Type
  3. Boolean

The java.lang.Boolean class wraps a boolean. You can construct a Boolean object from a boolean or a String, using one of these constructors.

public Boolean (boolean value)
     public Boolean (String value)

For example:

Boolean b1 = new Boolean (false);
     Boolean b2 = new Boolean ("true");

To convert a Boolean to a boolean, use its booleanValue method: public boolean booleanValue()

public class MainClass {

  public static void main(String[] args) {
    Boolean b1 = new Boolean(false);
    Boolean b2 = new Boolean("true");

    System.out.println(b1.booleanValue());
    System.out.println(b2.booleanValue());
  }

}

false
true




2.2.Boolean
2.2.1.java.lang.Boolean
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.