Java Logger: Create file with rotation number + .log as suffix
java, java.util.logging, logging
Solution
When you construct your `fileHandler` object, modify `filePath` to use a pattern. Create a pattern that makes use of the `%g` component. This component will be replaced at runtime with the generation number to distinguish rotated logs.
Example To place log file in the system temp directory with form `%TEMP%/mylog.1.log`, use the following pattern:
`"%t/mylog.%g.log"`
Problem
I am using the Java Logger in the java.util.logging package. This is how I create the logger currently: ``` FileHandler fileHandler = new FileHandler(filePath, 5242880, 5, true); fileHandler.setFormatter(new java.util.logging.Formatter() { @Override public String format(LogRecord logRecord) { if(logRecord.getLevel() == Level.INFO) { return "[INFO " + createDateTimeLog() + "] " + logRecord.getMessage() + "\r\n"; } else if(logRecord.getLevel() == Level.WARNING) { return "[WARN " + createDateTimeLog() + "] " + logRecord.getMessage() + "\r\n"; } else if(logRecord.getLevel() == Level.SEVERE) { return "[ERROR " + createDateTimeLog() + "] " + logRecord.getMessage() + "\r\n"; } else { return "[OTHER " + createDateTimeLog() + "] " + logRecord.getMessage() + "\r\n"; } } }); logger.addHandler(fileHandler) ``` Now when my logger logs, it creates a file with the extention .0,.1,.2 (etc). I would prefer for it to say .0.log, .1.log (etc). I cannot find where I can set this. Any ideas / help would be great.