■コード
package pkg;
import java.util.logging.Level;
import java.util.logging.Logger;
public class HelloPerformanceLogging {
private static Logger performanceLogger = Logger.getLogger("performance");
public void logAllLevel() {
long timeProcess1 = -1;
if (performanceLogger.isLoggable(Level.FINEST)) {
timeProcess1 = System.currentTimeMillis();
}
// <process>
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
// </process>
if (performanceLogger.isLoggable(Level.FINEST)) {
long timeProcess2 = System.currentTimeMillis();
performanceLogger
.finest("process:" + (timeProcess2 - timeProcess1));
}
}
/**
* add VM arguments <br>
* -Djava.util.logging.config.file=file/logger.properties
*/
public final static void main(final String... args) {
new HelloPerformanceLogging().logAllLevel();
}
}
■ファイル
file/logger.properties
handlers= java.util.logging.ConsoleHandler
java.util.logging.ConsoleHandler.level = ALL
java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter
performance.level= ALL
■結果 (-Djava.util.logging.config.file=file/logger.properties で実行)
2011/05/26 16:56:41 pkg.HelloPerformanceLogging logAllLevel
詳細レベル (高): process:1000
tags
---
java logger パフォーマンスログ