What are Unary Operators in java


Unary Operators >

The unary operators require only one operand; they perform various operations such as incrementing/decrementing a value by one, negating an expression, or inverting the value of a boolean.


Operator
Description
+
Unary plus operator;
indicates positive value
(it’s optional, if not used numbers are positive)
-
Unary minus operator;
indicates negative value
++
Increment operator;
increments value by 1
--
Decrement operator;
decrements value by 1
!
Logical complement operator;
inverts boolean value


Program 2 to demonstrate Unary operators
/** JavaMadeSoEasy.com */
public class UnaryOperatorTest {
   public static void main(String[] args) {
          int result=+1;
          System.out.println("+   "+ result); //1
          result=-1;
          System.out.println("-  "+ result); //-1
         
          result=3;
          System.out.println("--------Now, result="+result);
          result++;
          System.out.println("++  "+ result); //4
          result--;
          System.out.println("--  "+ result); //3
          boolean boo=true;
          System.out.println("!   "+ !boo); //false
         
   }
}
/*OUTPUT
+   1
-  -1
Now, result=3
++  4
--  3
!   false
*/

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