Log.java

import org.apache.commons.logging.LogFactory;

@SuppressWarnings({"UnusedDeclaration"})
public class Log
{
    private final org.apache.commons.logging.Log log;

    private Log(String name)
    {
        log = LogFactory.getLog(name);
    }

    public static Log getLogger()
    {
        return getLogger(getCallerClassName());
    }

    public static Log getLogger(Class clazz)
    {
        return getLogger(clazz.getName());
    }

    public static Log getLogger(String name)
    {
        return new Log(name);
    }

    public void debug(Throwable t)
    {
        log.debug(t.getMessage(), t);
    }

    public void info(Throwable t)
    {
        log.info(t.getMessage(), t);
    }

    public void warn(Throwable t)
    {
        log.warn(t.getMessage(), t);
    }

    public void error(Throwable t)
    {
        log.error(t.getMessage(), t);
    }

    public void debug(String format, Object... args)
    {
        if (log.isDebugEnabled()) {
            log.debug(String.format(format, args));
        }
    }

    public void info(String format, Object... args)
    {
        if (log.isInfoEnabled()) {
            log.info(String.format(format, args));
        }
    }

    public void warn(String format, Object... args)
    {
        if (log.isWarnEnabled()) {
            log.warn(String.format(format, args));
        }
    }

    public void error(String format, Object... args)
    {
        if (log.isErrorEnabled()) {
            log.error(String.format(format, args));
        }
    }

    public void debug(Throwable t, String format, Object... args)
    {
        if (log.isDebugEnabled()) {
            log.debug(String.format(format, args), t);
        }
    }

    public void info(Throwable t, String format, Object... args)
    {
        if (log.isInfoEnabled()) {
            log.info(String.format(format, args), t);
        }
    }

    public void warn(Throwable t, String format, Object... args)
    {
        if (log.isWarnEnabled()) {
            log.warn(String.format(format, args), t);
        }
    }

    public void error(Throwable t, String format, Object... args)
    {
        if (log.isErrorEnabled()) {
            log.error(String.format(format, args), t);
        }
    }

    private static String getCallerClassName()
    {
        return Thread.currentThread().getStackTrace()[3].getClassName();
    }
}