Java正則邏輯運算子[XY]匹配

Java正則邏輯運算子[XY]匹配X後跟Y。

範例
以下範例顯示了邏輯運算子的用法。

package com.yiibai;

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

public class LogicalOperatorDemo {
   private static final String REGEX = "to";
   private static final String INPUT = "Welcome to yiibai.COM";

   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());
      }
   }
}

編譯並執行上面的程式，這將產生以下結果 -

Match String start(): 8
Match String start(): 13