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                ## [StringTokenizer類](https://lingcoder.gitee.io/onjava8/#/book/18-Strings?id=stringtokenizer%e7%b1%bb) 在 Java 引入正則表達式(J2SE1.4)和`Scanner`類(Java SE5)之前,分割字符串的唯一方法是使用`StringTokenizer`來分詞。不過,現在有了正則表達式和`Scanner`,我們可以使用更加簡單、更加簡潔的方式來完成同樣的工作了。下面的例子中,我們將`StringTokenizer`與另外兩種技術簡單地做了一個比較: ~~~ // strings/ReplacingStringTokenizer.java import java.util.*; public class ReplacingStringTokenizer { public static void main(String[] args) { String input = "But I'm not dead yet! I feel happy!"; StringTokenizer stoke = new StringTokenizer(input); while(stoke.hasMoreElements()) System.out.print(stoke.nextToken() + " "); System.out.println(); System.out.println(Arrays.toString(input.split(" "))); Scanner scanner = new Scanner(input); while(scanner.hasNext()) System.out.print(scanner.next() + " "); } } /* Output: But I'm not dead yet! I feel happy! [But, I'm, not, dead, yet!, I, feel, happy!] But I'm not dead yet! I feel happy! */ ~~~ 使用正則表達式或`Scanner`對象,我們能夠以更加復雜的模式來分割一個字符串,而這對于`StringTokenizer`來說就很困難了。基本上,我們可以放心地說,`StringTokenizer`已經可以廢棄不用了。
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