java method
public class Main {
public static void main(String args[]) {
SayHi();
int sum = AddNums(5, 6);
System.out.println(sum);
}
public static void SayHi() { //This method has no return value
System.out.println("Hi!");
}
public static int AddNums(int a, int b) { //This method has a return value
return a + b;
}java method reference
Java provides a feature called method
reference in Java 8. Method reference
is used to refer method of functional interface.
It is compact and easy form
of lambda expression. Each time when
you are using lambda expression to just
referring a method, you can replace your
lambda expression with method reference.
Types of Method References:
- Reference to a static method. Syntax ==> ContainingClass::staticMethodName
- Reference to an instance method. Syntax ==> containingObject::instanceMethodName
- Reference to a constructor. Syntax ==> ClassName::newCopyright © 2021 Codeinu
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