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๐Ÿ‘จโ€๐Ÿ’ป ์ž๋ฐ” ๊ณ ๊ธ‰ ์Šคํ„ฐ๋”” PlayGround

์•ˆ๋…•ํ•˜์„ธ์š” GOLF์˜ ์ž๋ฐ” ์Šคํ„ฐ๋””์ž…๋‹ˆ๋‹ค. ์ž๋ฐ” ๊ธฐ์ดˆ๋ฅผ ๋„˜์–ด์„œ ํ•œ ์ธต ๋” ๊นŠ์€ ์Šคํ„ฐ๋””๋ฅผ ์ค€๋น„ ํ–ˆ์Šต๋‹ˆ๋‹ค.


1์ฃผ์ฐจ : Stream๊ณผ Optional

  1. Stream์— ์กด์žฌํ•˜๋Š” ๋‹ค์–‘ํ•œ ๋ฉ”์„œ๋“œ
  • ์ƒ์„ฑํ•˜๊ธฐ
  • ๊ฐ€๊ณตํ•˜๊ธฐ
  • ๊ฒฐ๊ณผ ๋งŒ๋“ค๊ธฐ
  1. ๋™์ž‘ ์ˆœ์„œ
  2. ์„ฑ๋Šฅ ํ–ฅ์ƒ
  3. ์ง€์—ฐ ์ฒ˜๋ฆฌ
  4. Null - safe ์ŠคํŠธ๋ฆผ ์ƒ์„ฑํ•˜๊ธฐ
  5. ์ค„์—ฌ ์“ฐ๊ธฐ

2์ฃผ์ฐจ : Wrapper Class์™€ ์ผ๊ธ‰ ์ปฌ๋ ‰์…˜

  1. ์ผ๊ธ‰ ์ปฌ๋ ‰์…˜์ด๋ž€ ?

  2. ์ผ๊ธ‰ ์ปฌ๋ ฅ์…˜์„ ์‚ฌ์šฉํ–ˆ์„ ๋•Œ ์ด์  4๊ฐ€์ง€

    • ๋น„์ง€๋‹ˆ์Šค์— ์ข…์†์ ์ธ ์ž๋ฃŒ๊ตฌ์กฐ
    • ๋ถˆ๋ณ€
    • ์ƒํƒœ์™€ ํ–‰์œ„๋ฅผ ํ•œ ๊ณณ์—์„œ ๊ด€๋ฆฌ
    • ์ด๋ฆ„์ด ์žˆ๋Š” ์ปฌ๋ ‰์…˜
  3. ์ผ๊ธ‰ ์ปฌ๋ ‰์…˜์˜ ๋‹จ์ 

3์ฃผ์ฐจ : Generic type Erasure, Enum ํด๋ž˜์Šค

4์ฃผ์ฐจ : ์ž๋ฐ” ๋ฆฌํ”Œ๋ ‰์…˜

  1. ๋ฆฌํ”Œ๋ ‰์…˜์ด๋ž€ ?
  2. Class ์ฐพ๊ธฐ
  3. Constructor ์ฐพ๊ธฐ
  4. Method ์ฐพ๊ธฐ
  5. Field(๋ณ€์ˆ˜) ๋ณ€๊ฒฝ
  6. ์™ธ์— ๋‚˜๋จธ์ง€ ๋กœ์ง๋“ค

5์ฃผ์ฐจ : syncronized vs acynchronize / blocking vs non blocking ์ฐจ์ด์ 

  1. ๋ชจ๋‹ˆํ„ฐ๋ž€ ?
  2. Lock ํด๋ž˜์Šค๋ž€?
  3. ์ฐจ์ด์ ์ด๋ž€? 2 by 2
  4. ๋‹ค๋ฅธ ์–ธ์–ด ์—์„œ์˜ ์‚ฌ๋ก€

6์ฃผ์ฐจ : ์ž๋ฐ” ๋™์‹œ์„ฑ ๋ฌธ์ œ๊ฐ€ ๋ฐœ์ƒ

  1. Syncronized ํ‚ค์›Œ๋“œ
  2. Concurrency ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ
  3. Atomic
  4. volatile

7์ฃผ์ฐจ : ์ง๋ ฌํ™” ์—ญ์ง๋ ฌํ™” ์™€ String ์ƒ์ˆ˜ ํ’€

  1. Serializable
  2. ๋‚ ์งœ ํ˜•์‹ ์ง๋ ฌํ™” ์ „๋žต
  3. String = "" vs String = new String("")์˜ ์ฐจ์ด

8์ฃผ์ฐจ : Completable Future

  1. Completable Future๋ž€?
  2. ๊ฐ์ข… ๋ฉ”์„œ๋“œ
  3. ๊ธฐ๋ณธ์ ์ธ ์‚ฌ์šฉ๋ฐฉ๋ฒ•
  4. ๋‹ค๋ฅธ Executor ๋„˜๊ธฐ๊ธฐ
  5. thenApply vs thenCompose
  6. ์—๋Ÿฌ ํ•ธ๋“ค๋ง

๐Ÿง‘ ๊ณผ์ œ ์ œ์ถœ์€ ์—ฌ๊ธฐ์—

1์ฃผ์ฐจ - Stream/Optional ๊ณผ์ œ ์ œ์ถœ

2์ฃผ์ฐจ - Wrapper/์ผ๊ธ‰์ปฌ๋ ‰์…˜ ๊ณผ์ œ ์ œ์ถœ

3์ฃผ์ฐจ - Generic/Enum ๊ณผ์ œ ์ œ์ถœ

4์ฃผ์ฐจ - Reflection ๊ณผ์ œ ์ œ์ถœ

5์ฃผ์ฐจ - syncronized vs acynchronize / blocking vs non blocking ๊ณผ์ œ ์ œ์ถœ

6์ฃผ์ฐจ - ์ž๋ฐ” ๋™์‹œ์„ฑ ํ”„๋กœ๊ทธ๋ž˜๋ฐ

7์ฃผ์ฐจ - ์ง๋ ฌํ™” ์—ญ์ง๋ ฌํ™”์™€ String ์ƒ์ˆ˜ ํ’€

8์ฃผ์ฐจ - Completable Future


๋งค์ฃผ๋งˆ๋‹ค ํ•œ ๋ช…์”ฉ ๋ฐœํ‘œ, ์งˆ๋ฌธ์€ 3๊ฐœ ์ด์ƒ ๊ผญ ์˜ˆ์ œ๋ฅผ ๋งŒ๋“ค์–ด ์ง์ ‘ ์ž‘์„ฑํ•ด๊ฐ€๋ฉฐ ๊ณต๋ถ€ํ•˜์‹œ๊ธธ ๋ฐ”๋ž๋‹ˆ๋‹ค.

๋งค ์ฃผ ๋งˆ๋‹ค ๊นƒํ—™ ์ด์Šˆ์— ์˜ฌ๋ ค์ฃผ์‹œ๊ธธ ๋ฐ”๋ž๋‹ˆ๋‹ค.


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