help with java

Question

Does anyone know why this code doesn't output hi if the input is hello

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner a = new Scanner(System.in);
if(a.next() == "hello"){
System.out.println("hi");
}
}
}

Answer 1

if(a.next().equals("hello")){
System.out.println("hi");
}