creating the functional interface in java
package com.concretepage;
@FunctionalInterface
public interface Calculator {
long calculate(long num1, long num2);
}creating the functional interface in java
package com.concretepage;
@FunctionalInterface
public interface Calculator {
long calculate(long num1, long num2);
}functional interface in java 8 example
@FunctionalInterface
interface Square
{
int calculate(int x);
}
class Test
{
public static void main(String args[])
{
int a = 5;
// lambda expression to define the calculate method
Square s = (int x)->x*x;
// parameter passed and return type must be
// same as defined in the prototype
int ans = s.calculate(a);
System.out.println(ans);
}
}Copyright © 2021 Codeinu
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