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Log4J

Apache log4j is a Java-based logging utility. It was originally written by Ceki Gülcü and is now a project of the Apache Software Foundation. log4j is one of several Java logging frameworks.

package logtest;

public class LogTest {

    /**
     * @param args the command line arguments
     */
    public static ActivityLog log = new ActivityLog(LogTest.class);
    
    public static void main(String[] args) {           
       log.logToFile(" Problem   ",ActivityLog.LogLevel.WARN);
    }
}

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