log4j sample - 01

log4j ile basit bir uygulama yapalım.
Bu uygulama da BasicConfigurator.configure(); metodunu kullandık ve böylece log4j.properties dosyasına gereksinimiz kalmadı.

 import org.apache.log4j.BasicConfigurator;  
 import org.apache.log4j.Level;  
 import org.apache.log4j.Logger;  
 import org.apache.log4j.Priority;  
 /**  
  *   
  * @author K_Goksu --> http://www.kasimgoksu.com  
  *   
  */  
 public class MySampleApp {  
      static Logger logger = Logger.getLogger(MySampleApp.class);  
      @SuppressWarnings("unchecked")   
      public static void main(String[] args) {  
           // load default configure, don't need log4j.properties file!  
           BasicConfigurator.configure();  
           //           # Set root logger level to DEBUG and its only appender to A1.  
           //           log4j.rootLogger=DEBUG, A1  
           //  
           //           # A1 is set to be a ConsoleAppender.  
           //           log4j.appender.A1=org.apache.log4j.ConsoleAppender  
           //  
           //           # A1 uses PatternLayout.  
           //           log4j.appender.A1.layout=org.apache.log4j.PatternLayout  
           //           log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n  
           logger.info("### Log4j sample :))) ###\n");  
           Priority[] allPossiblePriorities = Level.getAllPossiblePriorities();  
           for (int i = 0; i < allPossiblePriorities.length; i++) {  
                //TRACE < DEBUG < INFO < WARN < ERROR < FATAL  
                logger.setLevel((Level) allPossiblePriorities[i]);  
                System.out.println("### Level priorty is now " + allPossiblePriorities[i]);  
                logger.debug("DEBUG");  
                logger.info("INFO");  
                logger.warn("WARN");  
                logger.error("ERROR");  
                logger.fatal("FATAL");  
                System.out.println("\n\n");  
           }  
      }  
 }  

Kaynak koda buradan ulaşabilirsiniz.