How to write a conditional expression in lambda expression in Java?


The conditional operator is used to make conditional expressions in Java. It is also called a Ternary operator because it has three operands such as boolean condition, first expression, and second expression.

We can also write a conditional expression in lambda expression in the below program.

Example

interface Algebra {
   int substraction(int a, int b);
}
public class ConditionalExpressionLambdaTest {
   public static void main(String args[]) {
      System.out.println("The value is: " + getAlgebra(false).substraction(20, 40));
      System.out.println("The value is: " + getAlgebra(true).substraction(40, 10));
   }
   static Algebra getAlgebra(boolean reverse) {
      Algebra alg = reverse ? (a, b) -> a - b : (a, b) -> b - a; // conditional expression 
      return alg;
   }
}

Output

The value is: 20
The value is: 30
raja
Published on 19-Dec-2019 11:10:26
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