Java enum elements with spaces?

Question

Im working on java, I have created an enum as follows:

public enum myEnum
{
    india,
    russian,
    england,
    north America
}

Above

Answer 1

public enum myEnum
{
    india,
    russian,
    england,
    north_america
}

To access values

myEnum.values()

Answer 2

The Java naming rule does not allow white spaces as possible characters in a name of variables, classes, enums and enum members (and every other identifier). Therefore this "problem" cannot be resolved. Just use `north_america' as member name!

An identifier is an unlimited-length sequence of Java letters and Java digits, the first of which must be a Java letter.

The Java letters include uppercase and lowercase ASCII Latin letters A-Z (\u0041-\u005a), and a-z (\u0061-\u007a), and, for historical reasons, the ASCII underscore (_, or \u005f) and dollar sign ($, or \u0024). The $ character should be used only in mechanically generated source code or, rarely, to access preexisting names on legacy systems.

The "Java digits" include the ASCII digits 0-9 (\u0030-\u0039).

Answer 3

Write them together like northAmerica or use an underscore north_America.

Answer 4

The problem has nothing (specifically) to do with enums: in Java, names can't have spaces. Try eliminating the space (using capitalization to tell the bits apart) or use underscores instead.

Answer 5

just make your own valueOf like function in your enum class. Replace spaces with underscores. name your enum constants like this "north_america("North America")". If the method fails to find your enum it just returns the parameter.

public  static String valueOfOrDefault(String myValue) {
//replace space with underscore so it matches enum name
        String value=myValue.toUpperCase().replaceAll("\\s", "_");
        for(myEnum type : myEnum.class.getEnumConstants()) {
          if(type.name().equalsIgnoreCase(value)) {
            return type.toString();
          }
        }
        return myValue;
      }

Answer 6

I also introduced an own valueOf method. But I return with the Enum Type and I do not have to convert the "checkString"

checkString is "Petty Cash" for example.

JournalType journalType = JournalType.valueOfOrDefault(checkString);

public enum JournalType {

MISC_BILLING("Misc Billing"),
MISC_BILLING_AUTONUM("Misc Billing AutoNum"),
PRETTY_CASH("Petty Cash"),
RECURRING_AP("Recurring AP"),
GL_JOURNAL("GL Journal"),
GDS_NDS("GDS/NDS");

private final String journalType;

JournalType(String journalType) {
    this.journalType = journalType;
}

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

public static JournalType valueOfOrDefault(String myValue) {
    for(JournalType type : JournalType.class.getEnumConstants()) {
        if(type.toString().equals(myValue)) {
            return type;
        }
    }
   throw new IllegalArgumentException("JournalType not found");
}

}