Logger throwing() method in Java with Examples

throwing(String sourceClass, String sourceMethod, Throwable thrown) method is used to Log throwing an exception.In many scenario method is closed by throwing an exception then this is a very helpful method to log that a method is terminating by throwing an exception. The logging is done using the FINER level logging. If the level of the logger is set to log FINER level logging then the given arguments are stored in a log record with a message THROW which is forwarded to all registered output handlers.

Syntax:

public void throwing(String sourceClass,
                     String sourceMethod,
                     Throwable thrown)

Parameters: This method accepts three parameters:



  • sourceClass is the name of the class that issued the logging request,
  • sourceMethod is the name of the method and
  • result is The Throwable that is being thrown.

Return value: This method returns nothing.

Below programs illustrate throwing(String sourceClass, String sourceMethod, Object result) method:

Program 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

// Java program to demonstrate
// throwing(String, String, Throwable) method
  
import java.io.IOException;
import java.util.logging.FileHandler;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.logging.SimpleFormatter;
  
public class GFG {
  
    public static void main(String[] args)
        throws SecurityException, IOException
    {
  
        // Create a Logger
        Logger logger
            = Logger.getLogger(
                GFG.class.getName());
  
        // Create a file handler object
        FileHandler handler
            = new FileHandler("logs.txt");
        handler.setFormatter(new SimpleFormatter());
  
        // Add file handler as
        // handler of logs
        logger.addHandler(handler);
  
        // set Logger level()
        logger.setLevel(Level.FINER);
  
        // set Logger level()
        logger.setLevel(Level.FINER);
  
        // call throwing method with class
        // name =  GFG and method name = main
        // and IO Exception as Thrown object
        logger.throwing(GFG.class.getName(),
                        GFG.class.getMethods()[0].getName(),
                        new IOException());
    }
}

chevron_right


The output printed on log.txt is shown below.
Output:

Program 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

// Java program to demonstrate
// throwing(String, String, Throwable) method
  
import java.io.IOException;
import java.util.logging.FileHandler;
import java.util.logging.Level;
import java.util.logging.Logger;
  
public class GFG {
  
    // Create a Logger
    static Logger logger
        = Logger.getLogger(
            GFG.class.getName());
  
    public static void main(String[] args)
        throws SecurityException, IOException
    {
  
        // Create a file handler object
        FileHandler handler
            = new FileHandler("logs.txt");
  
        // Add file handler as
        // handler of logs
        logger.addHandler(handler);
  
        // set Logger level()
        logger.setLevel(Level.FINER);
  
        // set Logger level()
        logger.setLevel(Level.FINER);
  
        // call throwing method with string
        // and ArithmeticException as Thrown object
        logger.throwing(String.class.getName(),
                        String.class.getMethods()[0].getName(),
                        new ArithmeticException());
    }
}

chevron_right


The output printed on log.txt is shown below.
Output:

Reference: https://docs.oracle.com/javase/10/docs/api/java/util/logging/Logger.html#throwing(java.lang.String, java.lang.String, java.lang.Throwable)



My Personal Notes arrow_drop_up

I am a Developer I love to code and bring my ideas alive

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.