Logger getHandler() Method in Java with Examples

Last Updated : 20 Mar, 2019

The getHandlers() method of the Logger class is used to get the Handlers linked with this logger. Handler is used to taking care of the actual logging. one or more Handler can be added to a Logger. When messages are logged via the Logger, the messages are forwarded to the Handler. This method is helpful for getting an array of all registered Handlers.

Syntax:

public Handler[] getHandlers()

Parameters: This method accepts nothing.

Return value: This method return an array of all registered Handlers.

Below programs illustrate the getHandlers() method:
Program 1:

// Java program to demonstrate 
// Logger.getHandler() method 
  
import java.util.logging.*; 
import java.io.IOException; 
  
public class GFG { 
  
    public static void main(String[] args) 
        throws SecurityException, IOException 
    { 
  
        // Create a logger 
        Logger logger 
            = Logger.getLogger( 
                GFG.class.getName()); 
  
        // Log some logs 
        logger.info("This is message 1"); 
        logger.info("This is message 2"); 
        logger.info("This is message 3"); 
  
        // Get handler details using getHandler 
        Handler[] handlers = logger.getHandlers(); 
  
        // Log handler length 
        logger.info("length of Handler "
                    + handlers.length); 
    } 
} 

Output:
The output printed on eclipse IDE is shown below-

Program 2:

// Java program to demonstrate 
// Logger.getHandler() method 
  
import java.util.logging.*; 
import java.io.IOException; 
  
public class GFG { 
  
    public static void main(String[] args) 
        throws SecurityException, IOException 
    { 
  
        // Create a logger 
        Logger logger 
            = Logger.getLogger( 
                GFG.class.getName()); 
  
        // Set a console Handler 
        logger.addHandler(new ConsoleHandler()); 
  
        // Get handler details using getHandler 
        Handler[] handlers = logger.getHandlers(); 
  
        // Print handler details 
        for (int i = 0; i < handlers.length; i++) { 
            System.out.println("Handler details: "
                               + handlers[i].toString()); 
        } 
    } 
} 