import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class test {
  public static void main(String[] args) {
    getStrings(); //用正则表达式获取指定字符串内容中的指定内容
    System.out.println(\"********************\");
    replace(); //用正则表达式替换字符串内容
    System.out.println(\"********************\");
    strSplit(); //使用正则表达式切割字符串
    System.out.println(\"********************\");
    strMatch(); //字符串匹配
  }

  private static void strMatch() {
    String phone = \"13539770000\";
    //检查phone是否是合格的手机号(标准:1开头，第二位为3,5,8，后9位为任意数字)
    System.out.println(phone + \":\" + phone.matches(\"1[358][0-9]{9,9}\")); //true  
    
    String str = \"abcd12345efghijklmn\";
    //检查str中间是否包含12345
    System.out.println(str + \":\" + str.matches(\"\\\\w+12345\\\\w+\")); //true
    System.out.println(str + \":\" + str.matches(\"\\\\w+123456\\\\w+\")); //false
  }

  private static void strSplit() {
    String str = \"asfasf.sdfsaf.sdfsdfas.asdfasfdasfd.wrqwrwqer.asfsafasf.safgfdgdsg\";
    String[] strs = str.split(\"\\\\.\");
    for (String s : strs){
      System.out.println(s);
    }    
  }

  private static void getStrings() {
    String str = \"rrwerqq84461376qqasfdasdfrrwerqq84461377qqasfdasdaa654645aafrrwerqq84461378qqasfdaa654646aaasdfrrwerqq84461379qqasfdasdfrrwerqq84461376qqasfdasdf\";
    Pattern p = Pattern.compile(\"qq(.*?)qq\");
    Matcher m = p.matcher(str);
    ArrayList<String> strs = new ArrayList<String>();
    while (m.find()) {
      strs.add(m.group(1));      
    } 
    for (String s : strs){
      System.out.println(s);
    }    
  }

  private static void replace() {
    String str = \"asfas5fsaf5s4fs6af.sdaf.asf.wqre.qwr.fdsf.asf.asf.asf\";
    //将字符串中的.替换成_，因为.是特殊字符，所以要用\\.表达，又因为\\是特殊字符，所以要用\\\\.来表达.
    str = str.replaceAll(\"\\\\.\", \"_\");
    System.out.println(str);    
  }
}