In this example you learn how to limit the size of a log file when using a FileHandler handler. Limiting the log file will prevent the log file to grow wildly without limit.

package org.kodejava.util.logging;

import java.util.logging.Logger;
import java.util.logging.FileHandler;
import java.io.IOException;

public class LogFileLimit {
    // The log file size is set to 1 MB.
    public static final int FILE_SIZE = 1024 * 1024;

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

        try {
            // Create a FileHandler with 1 MB file size and a single log file.
            // We also tell the handler to append the log message.
            FileHandler handler = new FileHandler("myapp.log", FILE_SIZE, 1, true);
            logger.addHandler(handler);
        } catch (IOException e) {
            logger.warning("Failed to initialize logger handler.");
        }

        logger.info("Test info");
        logger.warning("Test warning");
        logger.severe("Test severe");
    }
}

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Wayan

Founder at Kode Java Org

A programmer, recreational runner and diver, live in the island of Bali, Indonesia. Programming in Java, Spring, Hibernate / JPA. You can support me working on this project, buy me a cup of coffee ☕ every little bit helps, thank you 🙏

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