public class StudentsDataBase {
     public static List<Student> students = new ArrayList<>();

     public static void addInfoAboutStudent(Student student) {
         students.add(student);
         printInfoAboutStudent(student);

     }

     public static void printInfoAboutStudent(Student student) {
         System.out.println("Имя: " + student.getName() + " Возраст: " + student.getAge());
     }

     public static void removeStudent(int index) {
         try {
             students.remove(index);
         } catch (Throwable throwable) {
             throwable.printStackTrace();
         }
     }

     public static void findDimaOrSasha() {
         //boolean found = false;
         for (int i = 0; i < students.size(); i++) {
             if (students.get(i).getName().equals("Dima")) {
                 System.out.println("Студент Dima есть в базе.");
                 break;
             }
             if (students.get(i).getName().equals("Sasha")) {
                 System.out.println("Студент Sasha есть в базе.");
                 break;
             }
         }
     }
 }