java 正規表現 memo
public class Test public static void main(String[] args){ String str = "Ab9Ab9"; System.out.println(str.replaceAll("([A-Z])([a-z])([0-9])", "$2$1$3")); } } // bA9bA9
public class Test public static void main(String[] args){ String str = "Ab9Ab9"; System.out.println(str.replaceAll("([A-Z])([a-z])([0-9])", "$2$1$3")); } } // bA9bA9