前端之家收集整理的这篇文章主要介绍了
正则表达式—获取、分隔、匹配，
前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。
// 获取
public static void fuctionDemo_5() {
String str = "yang cheng yong ben dan ba shi de ta hen sha";
String regex = "\\b[a-z]{3}\\b";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(str);
while (m.find()) {
System.out.println(m.group());
}
}
public static void fuctionDemo_4() {
String str = "18758183839";
str = str.replaceAll("(\\d{3})\\d{4}(\\d{4})","$1****$2");
System.out.println(str);
}
// 分割1
public static void fuctionDemo_3() {
String str = "yang8888cheng222yong";
str = str.replaceAll("(.)\\1+","$1");
System.out.println(str);
}
// 切割2
public static void fuctionDemo_2() {
String s1 = "yang cheng yong beng dan";
String[] names = s1.split(" +");
for (String name : names) {
System.out.println(name);
}
String s2 = "yang###sha@@@bi";
String[] names2 = s2.split("(.)\\1+");
for (String name : names2) {
System.out.println(name);
}
}
// 匹配手机号码是否正确
public static void fuctionDemo_1() {
String num = "15958184259";
String regex = "1[358][0-9]{9}";
boolean b = num.matches(regex);
System.out.println(num + ":" + b);
}
