False Negative in Java [duplicate]

I have written some code, that if the user's input doesn't match the correct input, it spits out "login failed". Somehow, the code also spits that out, when the given input is correct

package laptos;

import java.util.Scanner;

public class laptos {
    public static void main(String[] args) {

    String pass = "input"; // absolute password
    String user = "laptos"; // absolute username
    String passin; // user input for password
    String userin; // user input for user

    System.out.println("Login required..");
    System.out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
    System.out.println("Username: ");

    Scanner userInput;
    userInput = new Scanner(System.in);
    userin = userInput.nextLine();
    // username done

    System.out.println("Password:");
    userInput = new Scanner(System.in);
    passin = userInput.nextLine();
    // password done#

    System.out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
    if(passin == pass && userin == user) {

        System.out.println("Successful");   

    }
    else { 
        System.out.println("failed");
    }
    }
}