StringTokenizer

2020. 1. 18. 00:44ยท ๐Ÿ’ฌ Language/Java

์ง€๋‚œ ํฌํŠธํŒ…์—์„œ Split ํ•จ์ˆ˜๋ฅผ ํ†ตํ•œ Tokenizer ๋ฐฉ๋ฒ•์„ ๊ธฐ์ˆ ํ–ˆ๋‹ค.

Java์—์„œ๋Š” StringTokenizer๋ผ๋Š” ํ•จ์ˆ˜๋„ ์กด์žฌํ•œ๋‹ค.

๋™์ž‘ ์›๋ฆฌ๋Š” C์–ธ์–ด์—์„œ ์‚ฌ์šฉํ–ˆ๋˜ strtok ํ•จ์ˆ˜์™€ ๋น„์Šทํ•˜๊ฒŒ ๋ณผ ์ˆ˜ ์žˆ๋‹ค.

 

์ƒ์„ฑ์ž(Constructor)

StringTokenizer(String str)

ํ•ด๋‹น ๋ฌธ์ž์—ด์— ๋Œ€ํ•ด ๋ฌธ์ž์—ด ํ† ํฐํ™” ๊ตฌ์„ฑ

StringTokenizer(String str, String delim)

ํ•ด๋‹น ๋ฌธ์ž์—ด์— ๋Œ€ํ•ด ๋ฌธ์ž์—ด ํ† ํฐํ™” ๊ตฌ์„ฑ

StringTokenizer(String str, String delim, boolean returnDelims)

ํ•ด๋‹น ๋ฌธ์ž์—ด์— ๋Œ€ํ•ด ๋ฌธ์ž์—ด ํ† ํฐํ™” ๊ตฌ์„ฑ

ํ•จ์ˆ˜(Method)

countTokens()

์•ž์œผ๋กœ ํ˜ธ์ถœํ•  ์ˆ˜ ์žˆ๋Š” ํšŸ์ˆ˜๋ฅผ ๋ฐ˜ํ™˜ํ•œ๋‹ค.

hasMoreElements()

hasMoreTokens์™€ ๋™์ผํ•œ ๊ฐ’์„ ๋ฐ˜ํ™˜ํ•œ๋‹ค.

hasMoreTokens()

ํ•ด๋‹น ๋ฌธ์ž์—ด์—์„œ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋Š” ํ† ํฐ์ด ๋” ์žˆ๋Š”์ง€ ์—ฌ๋ถ€๋ฅผ true, false ๊ฐ’์œผ๋กœ ๋ฐ˜ํ™˜ํ•œ๋‹ค.

nextElement()

๋ฐ˜ํ™˜๊ฐ’์ด ๋ฌธ์ž์—ด์ด ์•„๋‹Œ Object๋ผ๋Š” ์ ์„ ์ œ์™ธํ•˜๊ณ ๋Š” nextToken๊ณผ ๋™์ผํ•œ ๊ฐ’์„ ๋ฐ˜ํ™˜ํ•œ๋‹ค.

nextToken()

ํ•ด๋‹น ๋ฌธ์ž์—ด์—์„œ ๋‹ค์Œ ํ† ํฐ์„ ๋ฐ˜ํ™˜ํ•œ๋‹ค.

nextToken(String delim)

ํ•ด๋‹น ๋ฌธ์ž์—ด์—์„œ ๋‹ค์Œ ํ† ํฐ์„ ๋ฐ˜ํ™˜ํ•œ๋‹ค.

 

Calculator ๊ตฌํ˜„ ์ค‘ ์ผ๋ถ€๋ถ„์—์„œ StringTokenizer๋ฅผ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ์‚ฌ์šฉํ–ˆ๋‹ค.

ActionListener resultEventHandler = new ActionListener() {
		
	public void actionPerformed(ActionEvent e) {
			String data = textarea.getText();
			StringTokenizer token = new StringTokenizer(data,"+-*/",true);
			double a = Double.parseDouble(token.nextToken());
			String buffer = token.nextToken();
			double b = Double.parseDouble(token.nextToken());
			
			if(buffer.equals("+")) {
				System.out.println(a+b);
			}
			
			else if (buffer.equals("-")) {
				System.out.println(a-b);
			}
			
			else if (buffer.equals("*")) {
				System.out.println(a*b);
			}
			
			else if (buffer.equals("/")) {
				System.out.println(a/b);
			}
	}
};

 

 

*Reference

https://docs.oracle.com/javase/7/docs/api/java/util/StringTokenizer.html

 

StringTokenizer (Java Platform SE 7 )

Constructs a string tokenizer for the specified string. All characters in the delim argument are the delimiters for separating tokens. If the returnDelims flag is true, then the delimiter characters are also returned as tokens. Each delimiter is returned a

docs.oracle.com

 

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StringTokenizer
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