์๋ฐ ํ๋ ํจํด์ ์ด๋ป๊ฒ ์ฌ์ฉํด์ผ ํ ๊น? 2023๋ 8์ 23์ผLess than 1 minuteJavaBehavior PatternsArticle(s)blogyozm.wishket.comjavajdkpatterncommand-patternobserver-patternstate-pattern