How do I set a filter on a logger handler?

This example give you an example on how to set the Filter of a
logger handler. In the code below we implements the Filter on the
FileHandler to log only a Level.SEVERE message. Other
level log will not recorded to the file.

package org.kodejava.example.util.logging;

import java.util.logging.*;

public class LoggerFilter {
    public static void main(String[] args) {
        Logger logger = Logger.getLogger(LoggerFilter.class.getName());

        FileHandler handler = null;
        try {
            handler = new FileHandler("myapp.log");
            handler.setFilter(new Filter() {
                public boolean isLoggable(LogRecord record) {
                    // When the LogRecord level is equals to Level.SEVERE the 
                    // message is recorded to the file.
                    return record.getLevel().equals(Level.SEVERE);
        } catch (IOException e) {
            logger.log(Level.SEVERE, "Fail to create logger handler", e);

        logger.addHandler(handler);"Information message");
        logger.warning("Warning message");
        logger.severe("Severe message");


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