利用正则表达式，对String对象进行替换与分割

对String字符串进行修改

package day_160810_regex;

import java.util.Arrays;

public class Demo02 {
	public static void main(String[] args) {
		String s = "1,2,3,4,5";
		String[] ss = s.split(",");
		System.out.println(Arrays.toString(ss));

		// ip
		s = "192.168.1.168";
		ss = s.split("\\.");
		System.out.println(Arrays.toString(ss));

		// 2017-11-21 14:30:20
		s = "2017-11-21 14:30:20";
		ss = s.split("[-:]");
		System.out.println(Arrays.toString(ss));

		// 根据数字进行拆分
		s = "d211fjkdfjkd323fkd32j35klak5dfjldkfj";
		// ss=s.split("\\d{1,}");或者
		ss=s.split("\\d+");
		System.out.println(Arrays.toString(ss));
		//根据叠词进行拆分
		s="1234555556789qw--ertyyyyyuioasdffffghjklzjjjxcvbnnnnnm";
		ss=s.split("(.)\\1+");
		System.out.println(Arrays.toString(ss));
		//将数字替换成*
		String a="qwe1234rtyui456oasdfgh67jzxc892vbn";
		a=a.replaceAll("\\d+", "*");
		System.out.println(a);
		//将叠词换成1
		a="1234555556789qw--ertyyyyyuioasdffffghjklzjjjxcvbnnnnnm";
		a=a.replaceAll("(.)\\1+", "1");
		System.out.println(a);
		//将叠词去掉剩一个，将..去掉
		a = "我我..我我..我.们们们...们们..去去去去去..去去....去去..."
				+ "吃吃...吃吃吃吃..吃饭饭.饭...饭饭饭..吧吧吧吧吧" + "吧...吧吧..吧吧吧...,你你....请请.请"
				+ "请请...请.客客客..客..客";
		a=a.replaceAll("\\.", "");
		System.out.println(a);
		a=a.replaceAll("(.)\\1+", "$1");
		System.out.println(a);
	}
}