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This document compares different methods for measuring performance and timing logic in Java, including System.currentTimeMillis(), System.nanoTime(), the StopWatch class from Apache Commons Lang, and the StopWatch utility from Spring Core. Code examples are provided for each method to demonstrate how to use it and sample output is shown. The Spring and Commons StopWatch implementations are then compared in terms of functionality.
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![Spring core lib에 있는 util성 StopWatch (3.0)결과took 2000 mstook 5000 mstook 3001 msStopWatch 'Stop Watch': running time (millis) = 10001; [initializing] took 2000 = 20%; [processing] took 5000 = 50%; [finalizing] took 3001 = 30%StopWatch 'Stop Watch': running time (millis) = 10001-----------------------------------------ms % Task name-----------------------------------------02000 020% initializing05000 050% processing03001 030% finalizing](https://image.slidesharecdn.com/random-110708014049-phpapp01/85/-6-320.jpg)
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We were visiting a long-time client—just a routine check-in.
But in passing, they said something that stopped us cold:
“We hate our EDI software. But we’re stuck with it.”
They weren’t a small team. They were moving high volumes with a recognizable brand.
And yet they were spending hours wrestling with outdated tools, error-prone processes, and support that never picked up the phone.
We knew EDI wasn’t supposed to feel like a trap.
So we stayed.
Not for a few hours—but for a week.
We sat with their ops team. Watched their workflows. Felt their friction firsthand.
And at the end of that week, the decision was obvious:
💡 Build something better.
🛠️ Build it for the people who do the work.
🤝 And back it with real support.
That’s how ActionEDI was born—not to chase a trend, but to solve the exact problem too many small and mid-sized businesses were silently dealing with.
Today, we’ve processed over 5 million transactions.
We support partners like CDW, Volvo, and John Deere.
And we’re just getting started.
Because when you build with your sleeves rolled up,
You don’t forget who you’re building it for.
https://actionedi.com/
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속도체크
- 1. Java, 특정 로직에 대한 성능 확인(속도 체크)김용환
- 2. System.currentTimeMillis()소스long startTime = System.currentTimeMillis();Thread.sleep(1000);long estimatedTime = System.currentTimeMillis() - startTime;System.out.println("took " + estimatedTime + " ms");결과took 1000 ms
- 3. System.nanoTime() 소스long time1 = System.nanoTime();Thread.sleep(1000);long time2 = System.nanoTime();long timeSpent = time2 - time1;System.out.println("took " + timeSpent + " ns");결과took 1000232514 ns
- 4. Commons-lang의 StopWatch (2.3)import org.apache.commons.lang.time.StopWatch;..StopWatchstopWatch = new StopWatch();stopWatch.reset();stopWatch.start();Thread.sleep(2000);stopWatch.stop();System.out.println(stopWatch.toString());stopWatch.reset();stopWatch.start();Thread.sleep(5000);stopWatch.stop();System.out.println(stopWatch.toString());stopWatch.reset();stopWatch.start();Thread.sleep(3000);stopWatch.stop();System.out.println(stopWatch.toString());소스0:00:02.0000:00:05.0000:00:03.000결과
- 5. Spring core lib에 있는 util성 StopWatch (3.0)소스import org.springframework.util.StopWatch;...StopWatchstopWatch = new StopWatch("Stop Watch");stopWatch.start("initializing");Thread.sleep(2000);stopWatch.stop();System.out.println("took " + stopWatch.getLastTaskTimeMillis() + " ms");stopWatch.start("processing");Thread.sleep(5000);stopWatch.stop();System.out.println("took " + stopWatch.getLastTaskTimeMillis() + " ms");stopWatch.start("finalizing");Thread.sleep(3000);stopWatch.stop();System.out.println("took " + stopWatch.getLastTaskTimeMillis() + " ms");System.out.println(stopWatch.toString());System.out.println();System.out.println(stopWatch.prettyPrint());
- 6. Spring core lib에 있는 util성 StopWatch (3.0)결과took 2000 mstook 5000 mstook 3001 msStopWatch 'Stop Watch': running time (millis) = 10001; [initializing] took 2000 = 20%; [processing] took 5000 = 50%; [finalizing] took 3001 = 30%StopWatch 'Stop Watch': running time (millis) = 10001-----------------------------------------ms % Task name-----------------------------------------02000 020% initializing05000 050% processing03001 030% finalizing
- 7. 남의 것 사용그냥 인터넷에서 남들이 만든 StopWatch를 찾아서 copy&paste한다.http://www.devdaily.com/blog/post/java/stopwatch-class-that-can-be-used-for-timings-benchmarks
- 8. Commons-lang의 StopWatch와 Spring Util의 StopWatch비교