@Override
	public String toString() {
		StringBuilder builder = new StringBuilder();
		for(int i = 0; i < fields.length; i++) {
			builder.append(':');
			if (fields[i] != null)
				builder.append(fields[i]);
		}
		return builder.substring(1);
	}
Generates a String representation of this object.
src/io/socket/IOMessage.java