正则表达式

  正则表达式1

public String zhengzeTest() {
  String sourceInput = "029-88451688";
  String regex = "(\\d{3,4})(\\-?)[0-9]{7,8}";
  Pattern pattern = Pattern.compile(regex);
  Matcher matcher = pattern.matcher(sourceInput);
  if (matcher.matches()) {
   return sourceInput;
  } else {
   return null;
  }
 }

 public String judgePhoneNumber() {
  String sourceInput = "+086-15229359310";
  String regex = "((\\+?)0?8?6?\\-?)[0-9]{11}";
  Pattern pattern = Pattern.compile(regex);
  Matcher matcher = pattern.matcher(sourceInput);
  boolean isMatcher = matcher.matches();
  if (isMatcher == true) {
   return sourceInput;
  } else {
   return "phoneNumber not match";
  }
 }
 
 ///javascript中的\和Java中的\\一样
 public String judgeCharacter(){
  String  sourceInput = "aaaaaab";
  String regex = "a+b";//1个以上a  一个b   a*b  0个或多个a 一个b 如果要把+当成加号，就必须用转义符\\
  Pattern pattern = Pattern.compile(regex);
  Matcher matcher = pattern.matcher(sourceInput);
  boolean isMatcher = matcher.matches();
  if(isMatcher == true){
   return sourceInput;
  }else{
   return "character not matcher";
  }
 }

 public static void main(String[] args) {
//  System.out.println(new PatternDemo().zhengzeTest());
//  System.out.println(new PatternDemo().judgePhoneNumber());
  System.out.println(new PatternDemo().judgeCharacter());
 }

 

正则表达式1