How to get value from Java enumerations

I have an enumeration that looks like:

public enum Constants{
  YES("y"),NO("N")
  private String value;

  Constants(String value){
    this.value = value;
  }
}

I have a test class that looks like

public class TestConstants{
 public static void main(String[] args){
   System.out.println(Constants.YES.toString())
   System.out.println(Constants.NO.toString())
 }
}

The output is:

YES
NO

replace

Y
N

I'm not sure what's wrong here?

Solution

You need to override the toString method of enumeration:

public enum Constants{
    YES("y"),NO("N")

    // No changes

    @Override
    public String toString() {
        return value;
    }
}