正则表达式的获取功能 - 黑马程序员技术交流社区

package com.heima.regex;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Demo8_Pattern {
public static void main(String[] args) {
//demo1();
//demo2();
demo3();
}
//匹配查找邮箱
private static void demo3() {//[1][\\d&&[012678]][\\d]{9}
String s = "我的邮箱是smhjx2006@163.com,我曾经用过hmsykt2015@sina.com.cn,我还用过hmsykt0902@qq.com";
//String regex = "[a-zA-Z0-9_]+@[a-zA-Z0-9]+(\\.[a-zA-Z]+)+";//较为精确的匹配。
String regex = "\\w+@\\w+(\\.\\w+)+";
Pattern p = Pattern.compile(regex);
Matcher matcher = p.matcher(s);
while(matcher.find()){
System.out.println(matcher.group());
}
}
//匹配查找手机号
private static void demo2() {
String s = "我的手机是18511866260,我曾用过18987654321,还用过18812345678";
String regex = "1[3578]\\d{9}";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(s);
/*boolean b1 = m.find();
System.out.println(b1);
System.out.println(m.group());
boolean b2 = m.find();
System.out.println(b2);
System.out.println(m.group());*/
while(m.find())
System.out.println(m.group());
}
}

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