268.正则表达式的获取功能

正则表达式的获取功能

• Pattern和Matcher的结合使用 ```java public static void main(String[] args) { 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);//true
    System.out.println(m.group());//18988888888
    boolean b2 = m.find();
    System.out.println(b2);//true
    System.out.println(m.group());//18987654321
}

上面代码,可以简化成:
```java
    public static void main(String[] args) {

        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);

        while(m.find())
            System.out.println(m.group());

        /*
            输出结果:
            18988888888
            18987654321
            18812345678
        */
    }