জাভা

public class Main {
  public static void main(String[] args) {
    boolean username = true;

    System.out.println(((Object) username).getClass().getSimpleName());
  }
}

public class Main {
  public static void main(String[] args) {
    boolean password = false;

    System.out.println(((Object) password).getClass().getSimpleName());
  }
}

public class Main {
  public static void main(String[] args) {
    String[] fruits = {"আপেল", "আঙ্গুর", "কমলা", "কলা"};

    for (String fruit : fruits) {

      if (fruit.equals("কমলা")) {
        break;
      }

      System.out.println(fruit);
    }
  }
}

public class Main {
  public static void main(String[] args) {
    String[] fruits = {"আপেল", "আঙ্গুর", "কমলা", "কলা"};

    for (String fruit : fruits) {

      if (fruit.equals("কমলা")) {
        continue;
      }

      System.out.println(fruit);
    }
  }
}

public class Main {
  public static void main(String[] args) {
    String grade = "A";

    switch (grade) {

        case "A":
        case "B":
            System.out.println("good");
            break;

        default:
            System.out.println("try");
    }
  }
}

public class Main {
  public static void main(String[] args) {
    String grade = "C";

    switch (grade) {

        case "A":
        case "B":
            System.out.println("good");
            break;

        default:
            System.out.println("try");
    }
  }
}