string类中的matches方法:

public boolean matches(String regex) {

return Pattern.matches(regex, this);

}

 

 

思考题：

/* 需求：把一个字符串中的手机号码获取出来*/

public static void main(String[] args) {

//demo1();

String s = "我的手机是18988888888,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());