[JAVA] ๋ฌธ์ž์—ด ์ž๋ฅด๊ธฐ · ๋ถ„๋ฆฌ( substring() · split() )

2023. 11. 7. 18:47ยท๐Ÿ“† Today I Learned(๊ฐœ๋ฐœ์–ธ์–ดํ•™์Šต)/JAVA

T1) ๋ฌธ์ž์—ด ์ž๋ฅด๊ธฐ

  • ๋ฌธ์ž์—ด์—์„œ ํŠน์ • ๋ถ€๋ถ„์˜ ๋ฌธ์ž์—ด์„ ์ถ”์ถœํ•˜๊ณ  ์‹ถ๋‹ค๋ฉด substring() ๋ฉ”์†Œ๋“œ๋ฅผ ์‚ฌ์šฉํ•œ๋‹ค.
  • substring() ๋ฉ”์†Œ๋“œ์—์„œ๋„ ๋‹น์—ฐํžˆ ๊ณต๋ฐฑ๋„ ํฌํ•จํ•œ๋‹ค.
  • substring(์‹œ์ž‘์ง€์ ) = ์‹œ์ž‘์ง€์ ๋ถ€ํ„ฐ ๋๊นŒ์ง€ ๋ฐ˜ํ™˜
  • substring(์‹œ์ž‘์ง€์ , ๋์ง€์ ) = ์‹œ์ž‘์ง€์ ๋ถ€ํ„ฐ ๋์ง€์  -1 ์œ„์น˜๊นŒ์ง€ ๋ฐ˜ํ™˜
public class StringVarTest {
	public static void main(String[] args) {
		String str = " ๋ฌธ์ž๋ฌธ์ง€๋ฐฉ๋ฌธ";
		
		System.out.println(str.substring(1));		//๋ฌธ์ž๋ฌธ์ง€๋ฐฉ๋ฌธ
		System.out.println(str.substring(1, 3));	//๋ฌธ์ž
	}
}

 

T2) ๋ฌธ์ž์—ด ๋ถ„๋ฆฌ

  • ๋ฌธ์ž์—ด์—์„œ ํŠน์ • ๋ฌธ์ž(๊ตฌ๋ถ„์ž)๋ฅผ ๊ธฐ์ค€์œผ๋กœ ๋ฌธ์ž์—ด์„ ๋ถ„๋ฆฌํ•˜๊ณ  ์‹ถ๋‹ค๋ฉด split() ๋ฉ”์†Œ๋“œ๋ฅผ ์‚ฌ์šฉํ•œ๋‹ค.
  • ex) ๋™๋ฌผ = ์—ฌ์šฐ,๊ณฐ,์‚ฌ์ž,ํ˜ธ๋ž‘์ด
  • split() ๋ฉ”์†Œ๋“œ๋Š” ๊ตฌ๋ถ„์ž๋ฅผ ์ด์šฉํ•ด ๋ฌธ์ž์—ด์„ ๋ถ„๋ฆฌ๋œ ๋ฐฐ์—ด(array)๋กœ ๋ฐ˜ํ™˜ํ•œ๋‹ค.
public static void main(String[] args) {
    String animal = "์—ฌ์šฐ,๊ณฐ,์‚ฌ์ž,ํ˜ธ๋ž‘์ด";
    String[] animalArray = animal.split(",");
    for(int i = 0; i<animalArray.length; i++) {
        System.out.println(animalArray[i]);
    }
    /* ์ถœ๋ ฅ๊ฒฐ๊ณผ
     * ์—ฌ์šฐ
     * ๊ณฐ
     * ์‚ฌ์ž
     * ํ˜ธ๋ž‘์ด
     * */
}

 

 

 

์ฐธ๊ณ  :
์ด๊ฒƒ์ด ์ž๋ฐ”๋‹ค(๊ต์œก ํ˜„์žฅ์—์„œ ๊ฐ€์žฅ ๋งŽ์ด ์“ฐ์ด๋Š” JAVA ํ”„๋กœ๊ทธ๋ž˜๋ฐ์˜ ๊ธฐ๋ณธ์„œ)
https://search.shopping.naver.com/book/catalog/34238594620?cat_id=50010920&frm=PBOKMOD&query=%EC%9D%B4%EA%B2%83%EC%9D%B4%EC%9E%90%EB%B0%94%EB%8B%A4&NaPm=ct%3Dlocm18y8%7Cci%3D0e64b25f86693278b2d96906cbe4b981fe74c6d5%7Ctr%3Dboknx%7Csn%3D95694%7Chk%3D95e00da716b01b77d749d200eae34c788eb63950
์ €์ž‘์žํ‘œ์‹œ

'๐Ÿ“† Today I Learned(๊ฐœ๋ฐœ์–ธ์–ดํ•™์Šต) > JAVA' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€

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'๐Ÿ“† Today I Learned(๊ฐœ๋ฐœ์–ธ์–ดํ•™์Šต)/JAVA' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€
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[JAVA] ๋ฌธ์ž์—ด ์ž๋ฅด๊ธฐ · ๋ถ„๋ฆฌ( substring() · split() )
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