The compare() method of Boolean class is a built in method in Java which is used to compare two boolean values. It is a static method, so it can be called without creating any object of the Boolean class i.e. directly using the class name.
Syntax:
Boolean.compare(boolean a, boolean b)
Parameters: It takes two boolean values a and b in the parameter which are to be compared.
Return Type: The return type of the function is int. It returns
- 0 if ‘a’ is equal to ‘b’,
- a negative value if ‘a’is false and ‘b’ is true,
- a positive value if ‘a’ is true and ‘b’ is false.
Below are programs to illustrate the compare() method of Boolean class:
Program 1:
// Java code to implement// compare() method of Boolean class  class Lazyroar {      // Driver method    public static void main(String[] args)    {          // first value        boolean a = true;          // second value        boolean b = true;          // compare method        System.out.println(a + " comparing with " + b                           + " = " + Boolean.compare(a, b));    }} |
Output:
true comparing with true = 0
Program 2:
// Java code to implement// compare() method of Java class  class Lazyroar {      // Driver method    public static void main(String[] args)    {          // first value        boolean a = true;          // second value        boolean b = false;          // compare method        System.out.println(a + " comparing with " + b                           + " = " + Boolean.compare(a, b));    }} |
Output:
true comparing with false = 1
Program 3:
// Java code to implement// compare() method of Java class  class Lazyroar {      // Driver method    public static void main(String[] args)    {          // first value        boolean a = false;          // second value        boolean b = true;          // compare method        System.out.println(a + " comparing with " + b                           + " = " + Boolean.compare(a, b));    }} |
Output:
false comparing with true = -1
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