Lambda Expressions with One Parameter
When a lambda expression has only one parameter, it is not necessary to surround the parameter name with parentheses when it is specified on the left side of the lambda operator. For example, in the following program, ‘i->i*i’ is also a valid way to write the lambda expression.
Program
interface Mathematics {
int powerOf(int i);
}
public class Javaapp {
public static void main(String[] args) {
Mathematics powerOfTwo = i->i*i;
int ptwo = powerOfTwo.powerOf(5);
System.out.println("5^2 : "+ptwo);
Mathematics powerOfThree = (i)->i*i*i;
int pthree = powerOfThree.powerOf(5);
System.out.println("5^3 : "+pthree);
}
}