Define your own Custom Formatter
import java.util.logging.Formatter; import java.util.logging.LogRecord; public class CustomFormatter extends Formatter { public synchronized String format(LogRecord record) { String methodName = record.getSourceMethodName(); String message = record.getMessage(); StringBuffer buffer = new StringBuffer(50); buffer.append(methodName); buffer.append("="); buffer.append(message); return buffer.toString(); } }