LogLevels.java

public class LogLevels {

    public static String message(String logLine) {
        return logLine.split(":")[1].trim();
    }

    public static String logLevel(String logLine) {
        return logLine.split("]")[0].split("\\[")[1].toLowerCase();
    }

    public static String reformat(String logLine) {
        return message(logLine) + " (" + logLevel(logLine) + ')';
    }
}