Question

I know that this is a noobish error but I don’t know how to fix it.

public static void main (String args[]){
Console kitty = System.console();
String username = kitty.readLine("Username: ");
}

String username = kitty.readLine(“Username: “);

produces the error. Can someone please tell me what I am doing wrong, Thank you.

Answer 1

If you want to read the username from the standard input, you could use this code:

try {
    System.out.print("Username: ");
    InputStreamReader streamReader = new InputStreamReader(System.in);
    BufferedReader bufferedReader = new BufferedReader(streamReader);
    String username = bufferedReader.readLine();
} catch (IOException e) {
    e.printStackTrace();
}

The Console returned by System.console() does not necessarily exist, that is why you get a NullPointerException.