=== Student Management Menu ===
1. Add Student
2. Display All Students
3. Search Student by Roll No
4. Remove Student
5. Exit
Enter your choice: 1
Enter Roll No: 101
Enter Name: aaa
Student added successfully!
=== Student Management Menu ===
1. Add Student
2. Display All Students
3. Search Student by Roll No
4. Remove Student
5. Exit
Enter your choice: 2
All Students:
Roll No: 101, Name: aaa
=== Student Management Menu ===
1. Add Student
2. Display All Students
3. Search Student by Roll No
4. Remove Student
5. Exit
Enter your choice: 3
Enter Roll No to search: 101
Roll No: 101, Name: aaa
=== Student Management Menu ===
1. Add Student
2. Display All Students
3. Search Student by Roll No
4. Remove Student
5. Exit
Enter your choice: 3
Enter Roll No to search: 100
Student not found.
=== Student Management Menu ===
1. Add Student
2. Display All Students
3. Search Student by Roll No
4. Remove Student
5. Exit
Enter your choice: 4
Enter Roll No to remove: 101
Student removed.
=== Student Management Menu ===
1. Add Student
2. Display All Students
3. Search Student by Roll No
4. Remove Student
5. Exit
Enter your choice: 5
Exiting program
import java.util.ArrayList;
import java.util.Scanner;
class Student {
int rollNo;
String name;
Student(int rollNo, String name) {
this.rollNo = rollNo;
this.name = name;
}
}
class StudentManagement {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
ArrayList<Student> students = new ArrayList<>();
do
{
System.out.println(“\n Student Management Menu “);
System.out.println(“1. Add Student”);
System.out.println(“2. Display All Students”);
System.out.println(“3. Search Student by Roll No”);
System.out.println(“4. Remove Student”);
System.out.println(“5. Exit”);
System.out.print(“Enter your choice: “);
int choice = sc.nextInt();
sc.nextLine();
switch (choice) {
case 1:
{
System.out.print(“Enter Roll No: “);
int rollNo = sc.nextInt();
sc.nextLine();
System.out.print(“Enter Name: “);
String name = sc.nextLine();
students.add(new Student(rollNo, name));
System.out.println(“Student added successfully!”);
break;
}
case 2:
System.out.println(“\nAll Students:”);
for (Student s : students) {
System.out.println(“Roll No: ” + s.rollNo + “, Name: ” + s.name);
} break;
case 3:
{
System.out.print(“Enter Roll No to Search: “);
int rollNo = sc.nextInt();
boolean found = false;
for (Student s : students) {
if (s.rollNo == rollNo) {
System.out.println(“Student Found: Roll No: ” + s.rollNo + “, Name: ” + s.name);
found = true;
break;
}
} if (!found) {
System.out.println(“Student not found!”);
} break;
}
case 4:
{
System.out.print(“Enter Roll No to Remove: “);
int rollNo = sc.nextInt();
boolean removed = false;
for (int i = 0; i < students.size(); i++) {
if (students.get(i).rollNo == rollNo) {
students.remove(i);
System.out.println(“Student removed successfully!”);
removed = true;
break;
}
} if (!removed) {
System.out.println(“Student not found!”);
} break;
}
case 5:
System.out.println(“existing the program..”);
break;
default:
System.out.println(“Invalid choice”);
break;
}
}while(choice!=5);
}
}
