Java matches() 方法

package com.example.面向对象1;
import java.util.*;
import java.util.regex.Pattern;
public class listdemo2 {
    public static void main(String[] args) {
        //demo1
        String content = "I am coder " +
                "from nowcoder.com.";
        String pattern = ".*nowcoder.*";
           //content中是否包含pattern的内容呢
        boolean isMatch = Pattern.matches(pattern, content);
        System.out.println("字符串中是否包含了 'nowcoder' 子字符串? " + isMatch);
        //demo2  获取前后存在数据则用(.*)  不存则如第3个 直接写即可
        String Str = new String("www.runoob.com");
        System.out.print("返回值 :" );
        System.out.println(Str.matches("(.*)runoob(.*)"));
        System.out.print("返回值 :" );
        System.out.println(Str.matches("(.*)google(.*)"));
        System.out.print("返回值 :" );
        System.out.println(Str.matches("www(.*)"));
    }
}