How to capture enter key, using scanner as console input?

Question

I want to capture enter character in console. I am inputting 2 strings.

Case 1. removestudent(pressing enter) removes all the students from array list.

Cas

Answer 1

I think this will help you

Scanner input= new Scanner(System.in);
String readString = input.nextLine();
while(readString!=null) {
    System.out.println(readString);
    if (readString.equals(""))
        System.out.println("Read Enter Key.");
    if (input.hasNextLine())
        readString = input.nextLine();
    else
        readString = null;
}

Answer 2

You can read line and if line is blank, You can assume it is enter key.. like below code..

Scanner scanner = new Scanner(System.in);
String readString = scanner.nextLine();
System.out.println(readString);
if (readString.equals(""))
    System.out.println("Enter Key pressed.");
if (scanner.hasNextLine())
    readString = scanner.nextLine();
else
    readString = null;