Java枚举常量值不会改变

Question

So this isn't one of those "I want to change a constant value during runtime, why is it not working?" questions, just as a heads-up. I'm having trouble changing a Java Enum's value in code. I've made the change, saved, and re-run my program, but the value in-code has remained with the old value. I'm using the Enum.values() method to cycle through my Enum constants and the value is showing as the old value, not the new value I've directly typed into the enum. I'm starting to wonder if I'm losing my mind or my program has decided not to recompile my Enum or what. A sanity check would be welcome. See below for the entirety of my enum's code and where I am accessing the values.

public enum MSSQLType implements DBType {
//String Types
CHAR(8000, -1, null, "CHAR","TEXT"),
VARCHAR(8000, -1, null, "VARCHAR", "TEXT"),
TEXT(-1, -1, null, "TEXT", "TEXT"),
NCHAR(4000, -1, null, "CHAR", "TEXT"),
NVARCHAR(4000, -1, null, "VARCHAR", "TEXT"),
NTEXT(-1, -1, null, "TEXT", "TEXT"),
//Numeric Types
BIGINT(19, -1, null, "BIGINT", "BIGINT"),
BIGINT_IDENTITY (19, -1, null, null, null),
INT(10, -1, null, "INT", "BIGINT"),
SMALLINT(5, -1, null, "SMALLINT", "BIGINT"),
TINYINT(3, -1, null, "TINYINT", "BIGINT"),
BIT(1, -1, null, "TINYINT", "BIGINT"),
DECIMAL(14, 38, null, "DECIMAL", "DECIMAL"),
NUMERIC(14, 38, null, "DECIMAL", "DECIMAL"),
MONEY(15, 4, null, "DECIMAL", "DECIMAL"),
SMALLMONEY(6,4, null, "DECIMAL", "DECIMAL"),
FLOAT(-1, 53, null, "FLOAT", "FLOAT"),
REAL(-1, 106, null, "FLOAT", "FLOAT"),
//Date/time types
DATETIME(-1, -1, "YYYY-mm-DD HH:MM:SS", "DATETIME", "DATETIME"),
SMALLDATETIME(-1, -1, "YYYY-mm-DD HH:MM:SS", "DATETIME", "DATETIME"),
//Other types
BINARY(-1,-1, null, null, null),
VARBINARY(-1,-1, null, null, null),
IMAGE(-1,-1, null, null, null),
CURSOR(-1,-1, null, null, null),
SQL_VARIANT(-1,-1, null, null, null),
TABLE(-1,-1, null, null, null),
TIMESTAMP(-1, -1, "YYYY-mm-DD HH:MM:SS", "DATETIME", "DATETIME"),
UNIQUEIDENTIFIER(-1, -1, null, null, null);

private int size;
private int precision;
private String format;
private String convertTo;
private String fallback;

MSSQLType(int size, int precision, String format, String convertTo, String fallback) {
    this.size = size;
    this.precision = precision;
    this.format = format;
    this.convertTo = convertTo;
    this.fallback = fallback;
}
public int getSize() {
    return size;
}

public int getPrecision() {
    return precision;
}

public String getFormat() {
    return format;
}

public String getConvertTo() {
    return convertTo;
}

public String getFallback() {
    return fallback;
}

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

@Override
public String toString() {
    return super.toString().replaceAll("_", " ");
}
}  

So the convertTo and fallback values of REAL were changed to "FLOAT", "FLOAT" from "DOUBLE", "DOUBLE", but the code is still assigning the constant String "DOUBLE" to those two values! The values are being read out as so:

for (MSSQLType msSqlType : MSSQLType.values()) {
            if (typeName.equalsIgnoreCase(msSqlType.toString())) {
                this.type = msSqlType;
                return;
            }
        }

I've also tried using MSSQLType.class.getEnumConstants() with the same result.

Any help appreciated.

Answer 1

You are using msSqlType.toString() method you should use msSqlType.name() method. Default toString() method on enum returns name but not if you have overridden it in DBType class.

 if (typeName.equalsIgnoreCase(msSqlType.name())) {
            this.type = msSqlType;
            return;
        }