package com.wy.regular;
public class RegularTest {
public static void main(String[] args) {
pri("aaa 8888c".matches(".*\\d{4}."));//true
// \\b代表的是单词的边界
pri("aaa 8888c".matches(".*\\b\\d{4}."));//true
pri("aaa8888c".matches(".*\\d{4}."));//true
pri("aaa8888c".matches(".*\\b\\d{4}."));//false
}
public static void pri(Object object){
System.out.println(object);
}
}