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));// ips = "192.168.1.168";ss = s.split("\\.");System.out.println(Arrays.toString(ss));// 2017-11-21 14:30:20s = "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1a="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);}
}