Problem 1

Student.java:

package edu.manipal.mit;
 
class Student {
    String name;      
    int rollNumber;  
 
    void displayDetails() { 
        System.out.println("Name: " + name);
        System.out.println("Roll Number: " + rollNumber);
    }
}

DefaultAccessDemo.java:

package edu.manipal.mit;
 
public class DefaultAccessDemo {
    public static void main(String[] args) {
        Student student = new Student();
        student.name = "Achu";
        student.rollNumber = 12345;
 
        student.displayDetails();
    }
}

AccessTest.java:

package edu.manipal.kmc;
 
 
import edu.manipal.mit.Student;  // This will cause a compilation error
 
public class AccessTest {
    public static void main(String[] args) {
        Student student = new Student();  // Compilation error here
        student.name = "SomeGuy";      // Compilation error
        student.rollNumber = 67890;       // Compilation error
 
        student.displayDetails();         // Compilation error
    }
}