Posix 字元類別 \p{Graph} 匹配

說明

字元類別 \p{Graph} 與任何可見字元匹配。

示例

以下示例顯示了 Posix 字元類別匹配的用法。

package com.tutorialspoint;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class PosixCharacterClassDemo {
   private static final String REGEX = "\\p{Graph}";
   private static final String INPUT = "Bb12\tc!";

   public static void main(String[] args) {
      // create a pattern
      Pattern  pattern = Pattern.compile(REGEX);
      
      // get a matcher object
      Matcher matcher = pattern.matcher(INPUT); 

      while(matcher.find()) {
         //Prints the start index of the match.
         System.out.println("Match String start(): "+matcher.start());
      }
   }
}

編譯並執行上述程式，結果如下 −

Match String start(): 0
Match String start(): 1
Match String start(): 2
Match String start(): 3
Match String start(): 5
Match String start(): 6