package org.newdawn.slick.util;

/**
 * Plugin in interface for the logging of Slick
 * 
 * @author kevin
 */
interface LogSystem {

    /**
     * Log an error
     *
     * @param message The message describing the error
     * @param e The exception causing the error
     */
    public void error(String message, Throwable e);

    /**
     * Log an error
     *
     * @param e The exception causing the error
     */
    public void error(Throwable e);

    /**
     * Log an error
     *
     * @param message The message describing the error
     */
    public void error(String message);

    /**
     * Log a warning
     *
     * @param message The message describing the warning
     */
    public void warn(String message);

    /**
     * Log a warning
     *
     * @param message The message describing the warning
     * @param e The cause of the warning
     */
    public void warn(String message, Throwable e);

    /**
     * Log an information message
     *
     * @param message The message describing the infomation
     */
    public void info(String message);

    /**
     * Log a debug message
     *
     * @param message The message describing the debug
     */
    public void debug(String message);
}

package org.newdawn.slick.util;

/**
 * Plugin in interface for the logging of Slick.
 * 
 * @author kevin
 */
interface LogSystem {

    /**
     * Log an error.
     *
     * @param message The message describing the error
     * @param e The exception causing the error
     */
    public void error(String message, Throwable e);

    /**
     * Log an error.
     *
     * @param e The exception causing the error
     */
    public void error(Throwable e);

    /**
     * Log an error.
     *
     * @param message The message describing the error
     */
    public void error(String message);

    /**
     * Log a warning.
     *
     * @param message The message describing the warning
     */
    public void warn(String message);

    /**
     * Log a warning.
     *
     * @param message The message describing the warning
     * @param e The cause of the warning
     */
    public void warn(String message, Throwable e);

    /**
     * Log an information message.
     *
     * @param message The message describing the infomation
     */
    public void info(String message);

    /**
     * Log a debug message.
     *
     * @param message The message describing the debug
     */
    public void debug(String message);
}

Check yo style.