[Solved] Given two packages pkg1 and pkg2, and these classes:package pkg1; class C { void display() { System.out.println("Inside C"); } } package pkg2; import pkg1.C;... } }What is the error in this code? | Java

Java - Packages and Access Control

Given two packages pkg1 and pkg2, and these classes:

package pkg1;
class C {
    void display() {
        System.out.println("Inside C");
    }
}

package pkg2;
import pkg1.C;
public class D {
    public static void main(String[] args) {
        C c = new C();
        c.display();
    }
}

What is the error in this code?

ACannot access class C from pkg2 because it has default access

BCannot call display() because it is private

CCannot import package pkg1

DNo error, code runs fine

Step-by-Step Solution

Solution:

Step 1: Check class C's access modifier and package
Class C has default access (no keyword) and is in package pkg1, so it is accessible only within pkg1.
Step 2: Check usage of C in pkg2
Class D in pkg2 tries to create an instance of C and call display(), but C is not visible outside pkg1, causing a compile-time error.
Final Answer:
Cannot access class C from pkg2 because it has default access -> Option A
Quick Check:
Default access = package-only visibility [OK]

Quick Trick: Default access blocks cross-package access [OK]

Common Mistakes:

Assuming default access allows cross-package use
Thinking display() is private
Confusing import errors with access errors

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Given two packages pkg1 and pkg2, and these classes:

Step 1: Check class C's access modifier and package

Step 2: Check usage of C in pkg2

Final Answer:

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