متد replaceAll()‎ در جاوا

class Main {
  public static void main(String[] args) {
    String str1 = "aabbaaac";
    String str2 = "Learn223Java55@";

    // regex for sequence of digits
    String regex = "\\d+";

    // all occurrences of "aa" is replaceAll with "zz"
    System.out.println(str1.replaceAll("aa", "zz"));  // zzbbzzac


    // replace a digit or sequence of digits with a whitespace
    System.out.println(str2.replaceAll(regex, " "));  // Learn Java @


  }
}
class Main {
  public static void main(String[] args) {
    String str1 = "aabbaaac";
    String str2 = "Learn223Java55@";

    // regex for sequence of digits
    String regex = "\\d+";

    // all occurrences of "aa" is replaceAll with "zz"
    System.out.println(str1.replaceAll("aa", "zz"));  // zzbbzzac


    // replace a digit or sequence of digits with a whitespace
    System.out.println(str2.replaceAll(regex, " "));  // Learn Java @


  }
}اجرای کد

// Program to replace the + character
class Main {
  public static void main(String[] args) {
    String str1 = "+a-+b";

    // replace "+" with "#" using replaceAll()
    // need to escape "+"
    System.out.println(str1.replaceAll("\\+", "#"));  // #a-#b


    // replace "+" with "#" using replace()
    System.out.println(str1.replace("+", "#"));  // #a-#b

  }
}
// Program to replace the + character
class Main {
  public static void main(String[] args) {
    String str1 = "+a-+b";

    // replace "+" with "#" using replaceAll()
    // need to escape "+"
    System.out.println(str1.replaceAll("\\+", "#"));  // #a-#b


    // replace "+" with "#" using replace()
    System.out.println(str1.replace("+", "#"));  // #a-#b

  }
}اجرای کد