Limiting the Size of a Log by Using a Rotating Sequence of Files : Log Handler « Log « Java Tutorial

1. Java Tutorial
2. Log
3. Log Handler

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

public class Main {
  public static void main(String[] argv) throws Exception {
    // Create a file handler that uses 3 logfiles, each with a limit of 1Mbyte
    String pattern = "my%g.log";
    int limit = 1000000; // 1 Mb
    int numLogFiles = 3;
    FileHandler fh = new FileHandler(pattern, limit, numLogFiles);

    // Add to logger
    Logger logger = Logger.getLogger("com.mycompany");
    logger.addHandler(fh);
  }
}