正则表达式（九）——练习

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);
	}
}