查找单词以元音字母开头-
split()
String类的方法使用String类的方法将给定的字符串拆分为字符串数组split()
。
在for循环中,遍历获得的数组的每个字。
使用charAt()
方法获得所获得数组中每个单词的第一个字符。
使用if循环(如果这样)打印单词,验证字符是否等于任何元音。
假设我们有一个文本文件,其内容如下:
(cainiaojc.com) originated from the idea that there exists a class of readers who respond better to on-line content and prefer to learn new skills at their own pace from the comforts of their drawing rooms.
以下Java程序将打印该文件中所有以元音字母开头的单词。
import java.io.File; import java.util.Scanner; public class WordsStartWithVowel { public static String fileToString(String filePath) throws Exception { Scanner sc = new Scanner(new File(filePath)); StringBuffer sb = new StringBuffer(); String input = new String(); while (sc.hasNextLine()) { input = sc.nextLine(); sb.append(input); } return sb.toString(); } public static void main(String args[]) throws Exception { String str = fileToString("D:\\sample.txt"); String words[] = str.split(" "); for(int i = 0; i < words.length; i++) { char ch = words[i].charAt(0); if(ch == 'a'|| ch == 'e'|| ch == 'i' ||ch == 'o' ||ch == 'u'||ch == ' ') { System.out.println(words[i]); } } } }
输出结果
originated idea exists a of on-line and at own of