[论坛提问] java 正则表达式怎么用啊

String a="123345";
a.matches("\\d");

///
Pattern p=Pattern.compile("ab");
  String u="abcdefsfsaffsabadfewfadfgea";
  Matcher m=p.matcher(u);
  int i=0;
  while(m.find()){
i++;
  }
  System.out.println(i);

SunAlone · SunAlone

String a="123345";
a.matches("\\d");

///
Pattern p=Pattern.compile("ab");
  String u="abcdefsfsaffsabadfewfadfgea";
  Matcher m=p.matcher(u);
  int i=0;
  while(m.find()){
i++;
  }
  System.out.println(i);

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[论坛提问] java 正则表达式怎么用啊

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