如何在 Java 中使用正则表达式从字符串中移除元音?
简单的字符类“[ ]”匹配其中所有指定的字符。以下表达式匹配除了 xyz 之外的字符。
"[xyz]"
类似地,以下表达式匹配给定输入字符串中的所有元音。
"([^aeiouAEIOU0-9\W]+)";
然后,你可以使用 replaceAll() 方法用空字符串“”,替换匹配的字符将其移除。
例 1
public class RemovingVowels { public static void main( String args[] ) { String input = "Hi welcome to tutorialspoint"; String regex = "[aeiouAEIOU]"; String result = input.replaceAll(regex, ""); System.out.println("Result: "+result); } }
输出
Result: H wlcm t ttrlspnt
例 2
import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Test { public static void main( String args[] ) { Scanner sc = new Scanner(System.in); System.out.println("Enter input string: "); String input = sc.nextLine(); String regex = "[aeiouAEIOU]"; String constants = ""; System.out.println("Input string: \n"+input); //Creating a pattern object Pattern pattern = Pattern.compile(regex); //Matching the compiled pattern in the String Matcher matcher = pattern.matcher(input); //Creating an empty string buffer StringBuffer sb = new StringBuffer(); while (matcher.find()) { constants = constants+matcher.group(); matcher.appendReplacement(sb, ""); } matcher.appendTail(sb); System.out.println("Result: \n"+ sb.toString()+constants ); } }
输出
Enter input string: this is a sample text Input string: this is a sample text Result: ths s smpl txtiiaaee
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