Java log: Hierarchy logging : Log « Language Basics « Java

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Java log: Hierarchy logging

    
import java.util.logging.*;

class ParentLogger{
  private Logger logger = Logger.getLogger("sam.logging");
  private Level level = null;
  
  public ParentLogger(){
    level = Level.SEVERE;
    logger.setLevel(level);
  }

  public void aMethod()
  {
    logger.log(level, "Severe message from Parent Logger");
  }
}
class ChildLogger{
    private Logger logger = Logger.getLogger("sam.logging.child");

    private Level level = null;
    public ChildLogger()
    {
        //level = Level.INFO;
        //setting the level of this child logger, if not specified, it
        // will use the level of the parent logger
        logger.setLevel(level);
    }

    public void aMethod()
    {
        logger.log(Level.INFO, "Info message from Child Logger");
        logger.log(Level.SEVERE, "Severe message from Child Logger");
    }
}


public class LoggingMonitor {
    public static void main(String[] args){
        ParentLogger pLogger = new ParentLogger();
        ChildLogger cLogger = new ChildLogger();
        cLogger.aMethod();
    }
}

           
         
    
    
    
  

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