Core java_Enum Class

  Key-Value pair

@Getter
public enum KeyValueEnum {
    PRIMARY_CONTACT("9767"),
    ALTERNATE_CONTACT("9660");

    private final String contactNumber;

    KeyValueEnum(String contactNumber) {
        this.contactNumber = contactNumber;
    }
}

** Test Class **

String mobileNumber = "9767";

System.out.println(KeyValueEnum.PRIMARY_CONTACT.getContactNumber().equalsIgnoreCase(mobileNumber));

KeyValueEnum valueEnum = KeyValueEnum.ALTERNATE_CONTACT;

System.out.println(KeyValueEnum.ALTERNATE_CONTACT.equals(valueEnum));

Output: true

Key/Possible value only

public enum KeyEnum {
    NEW,
    ACTIVE,
    INACTIVE,
    DELETED;

    public static boolean contains(String childName){
        for(KeyEnum keyEnum : KeyEnum.values()){
            if(keyEnum.name().equalsIgnoreCase(childName)){
                return true;
            }
        }
        return false;
    }
}

** Test class **

String accountType = "DELETED";

System.out.println(KeyEnum.DELETED.name().equalsIgnoreCase(accountType));

KeyEnum var = KeyEnum.ACTIVE;

System.out.println(KeyEnum.ACTIVE.equals(var));

Output: true

// Value exists in enum

String name = "DELETED";

System.out.println(ValueEnum.contains(name));

Output: true