Enums in java error

Question

enum key{
   ABCD,XYZ
}

public class example {
     public static void main(String args[])
     {
       String Pass,a;
       Scanner in = new Scanner(System.in);
       System.out.println("enter the password");
       Pass=in.nextLine();
         if(Pass==key.ABCD)
            {
             System.out.println("your password was correct"+key.ABCD);
            }
         else
             {
             System.out.println("your password was incorrect");
             }
        }
}

Answer 1

Replace if(Pass==key.ABCD) with if(key.valueOf(Pass)==key.ABCD).

Or,

Since you have arbitory inputs values to check, it's better to convert the enum value to String and compare it. So change the if condition to if(Pass.equals(key.ABCD.name()))

Answer 2

The string Pass should be converted to an enum of type key first, so change the if part to :

if(key.valueOf(Pass) == key.ABCD){
   ...
}

Answer 3

enum key {
    ABCD, XYZ;

    public static key getKeyFromString(String keyStr) {
        key rtnKey = null;
        if (keyStr != null) {
            for (key value : values()) {
                if (keyStr.equalsIgnoreCase(value.toString())) {
                    rtnKey = value;
                    break;

                }
            }
        }
        return rtnKey;

    }
}

..................................In main method.................

key userKey = key.getKeyFromString(Pass)

user usrKey for comparison