java.util.logging.FileHandler Handler

Logger log = Logger.getLogger("com.my.test.lg");
log.setLevel(Level.FINER);
log.setUseParentHandlers(true);//true：会同时发送到控制台
//Handler handler = new FileHandler();
Handler handler = new FileHandler(Thread.class.getResource("/").getPath()+"java%u.log");//此处配置的pattern会覆盖logging.properties里java.util.logging.FileHandler.pattern的配置
handler.setLevel(Level.INFO);
log.addHandler(handler);

log.severe(" severe");
log.warning(" warning");
log.info(" info");
log.config(" config");
log.fine(" fine");
log.finer(" finer");
log.finest(" finest");