test2.java

SCJP认证考试资料

import java.util.regex.*;
public class Test2 {
    public static void main(String[] args) {
	String thePattern = "(?i)ill\\d";
	Pattern pattern = Pattern.compile(thePattern);
	String target = "Jack and JILL1 WENT UP THE hill2";
	Matcher matcher = pattern.matcher(target);
	System.out.println(matcher.replaceAll("xxxx"));
			   
    }
}