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์‹œ๊ฐ„์ดˆ๊ณผ ์ด์Šˆ

์ฒ˜์Œ์— ์ฝ”๋“œ๋ฅผ ์ œ์ถœํ–ˆ์„ ๋•Œ ์‹œ๊ฐ„ ์ดˆ๊ณผ ์ด์Šˆ๊ฐ€ ์žˆ์—ˆ๋‹ค. ์ด ๋ถ€๋ถ„์— ๋Œ€ํ•˜์—ฌ ์ฐพ์•„๋ณด๋˜ ์ค‘, C++ ์ฝ”๋“œ๋“ค์€ ๋˜‘๊ฐ™์€ ๋กœ์ง์œผ๋กœ ์ž˜ ๋Œ์•„๊ฐ€๋Š”๋ฐ ๋‚ด ์ฝ”๋“œ๋Š” ์•ˆ ๋Œ์•„๊ฐ€๋Š” ๊ฒƒ์ด ์ด์ƒํ•˜๋‹ค๋Š” ๊ฒƒ์„ ์•Œ๊ฒŒ ๋˜์—ˆ๋‹ค. ๊ทธ๋ž˜์„œ ์ฐพ์•„๋ณด๋‹ˆ ์ž๋ฐ”์˜ ๊ฒฝ์šฐ Scanner, System.out.println()๋ฅผ ์ด์šฉํ•ด ์ž…์ถœ๋ ฅ์„ ๊ตฌํ˜„ํ•  ์‹œ์— ์†๋„๊ฐ€ ๋งŽ์ด ๋Š๋ฆฌ๋‹ค๊ณ  ํ•œ๋‹ค. ๋”ฐ๋ผ์„œ BufferedReader, BufferedWriter๋ฅผ ์‚ฌ์šฉํ•ด์•ผ ํ•œ๋‹ค๊ณ  ํ•œ๋‹ค. ์‹ค์ œ๋กœ ์ด ๋ฌธ์ œ์— ๊ด€ํ•˜์—ฌ max ๊ฐ’์ธ '7 7'์„ ์ž…๋ ฅ์œผ๋กœ ๋„ฃ๊ณ  ๋Œ๋ ธ์„ ๋•Œ, BufferedWriter๋ฅผ ์‚ฌ์šฉํ–ˆ์„ ๊ฒฝ์šฐ ์ถœ๋ ฅ ์†๋„๊ฐ€ ํ›จ์”ฌ ๋น ๋ฅธ ๊ฒƒ์„ ํ™•์ธํ•  ์ˆ˜ ์žˆ์—ˆ๋‹ค.

BufferedReader, BufferedWriter

close() ๋ฉ”์„œ๋“œ

  • ์ž…๋ ฅ์†Œ์Šค๋ฅผ ๋‹ซ์Œ์œผ๋กœ์จ ์‚ฌ์šฉํ•˜๊ณ  ์žˆ๋˜ ์ž์›์„ ๋ฐ˜ํ™˜ํ•œ๋‹ค.
  • ํ”„๋กœ๊ทธ๋žจ์ด ์ข…๋ฃŒ๋  ๋•Œ, ์‚ฌ์šฉํ•˜๊ณ  ๋‹ซ์ง€ ์•Š์€ ์ŠคํŠธ๋ฆผ์„ JVM์ด ์ž๋™์ ์œผ๋กœ ๋‹ซ์•„์ฃผ๊ธฐ๋Š” ํ•˜์ง€๋งŒ, ์ŠคํŠธ๋ฆผ์„ ์‚ฌ์šฉํ•ด ๋ชจ๋“  ์ž‘์—…์„ ๋งˆ์น˜๊ณ  ๋‚œ ํ›„์—๋Š” close๋ฅผ ํ˜ธ์ถœํ•ด ๋ฐ˜๋“œ์‹œ ๋‹ซ์•„์ฃผ์–ด์•ผ ํ•œ๋‹ค๊ณ  ํ•œ๋‹ค.
  • System.in, System.out ๊ณผ ๊ฐ™์€ ํ‘œ์ค€ ์ž…์ถœ๋ ฅ ์ŠคํŠธ๋ฆผ์€ ๋‹ซ์•„์ฃผ์ง€ ์•Š์•„๋„ ๋œ๋‹ค.

flush() ๋ฉ”์„œ๋“œ

์ŠคํŠธ๋ฆผ์˜ ๋ฒ„ํผ์— ์žˆ๋Š” ๋ชจ๋“  ๋‚ด์šฉ์„ ์ถœ๋ ฅ ์†Œ์Šค์— ์“ด๋‹ค. flush()๋ฅผ ํ•ด์ฃผ์ง€ ์•Š์„ ๊ฒฝ์šฐ BufferedWriter๋ฅผ ์‚ฌ์šฉํ–ˆ์„ ๋•Œ ๊ทธ ๋‚ด์šฉ์ด ์ •ํ™•ํ•˜๊ฒŒ ์ถœ๋ ฅ๋˜์ง€ ์•Š๋Š”๋‹ค.