If Statement getting skipped [duplicate]

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• How do I compare strings in Java? 23 answers

I dont see why my if statement is being skipped (im new) My code is also not waiting for my reply with ReplyS (right before the if statement)

        do {
            System.out.println("What is your first number? ");
            Num1 = Scan.nextInt();
            System.out.println("Thanks! What is your second number? ");
            Num2 = Scan.nextInt();
            newNumber = Answer(Num1, Num2);
            System.out.println("After adding your numbers up I got " + newNumber);      
            System.out.println("Would you like to do something with the NEW number? ");
            ReplyS = Scan.nextLine();


                if(ReplyS == "y" ) { //asks the user if the want to do math with new number 
                    System.out.println("Would you like to/n 1. Multiply with a new number? /n 2. Divide with a new number? /n "
                            + "3. Dont choose 3!! ");
                    ReplyI = Scan.nextInt();
                        if(ReplyI == 1) {
                                System.out.println("What is the new number to multiply with " + newNumber);
                            ReplyI = Scan.nextInt();
                            Num4 = newNumber*ReplyI;
                            System.out.println("After multiplying your numbers I got " + Num4);
                            }
                    }
            System.out.println("would you like to start from the beggining? ");
            reRun = Scan.nextLine();
            }
    while (reRun == "y");
    }