The Problem is dont use (stat=='n')
use (stat.equals("n")) instead
Solution :
Code:
String letter; //the letter of the user
Scanner scanner = new Scanner(System.in); //text input scanner
System.out.println("Enter S Single , Enter M Married ");
System.out.println("Enter Letter: ");
letter = scanner.next();
if (letter.equals("S")) {
System.out.println("Single");
}
else if(letter.equals("M")){
System.out.println("Married");
}
else {
System.out.println("Invalid Letter");
}
The error tells you what the problem is. If you don't understand the problem, try googling it first. Googling is an important skill if you want to become a developer.