[Solved] What will be the output of this Java code?class Box { private int size = 5; public int getSize() { return size; } } public class Test { public static void main(String[] args) { Box b = new Box();... | Java

Java - Encapsulation

What will be the output of this Java code?

class Box {
  private int size = 5;
  public int getSize() {
    return size;
  }
}
public class Test {
  public static void main(String[] args) {
    Box b = new Box();
    System.out.println(b.getSize());
  }
}

ARuntime error

B0

C5

DCompilation error

Step-by-Step Solution

Solution:

Step 1: Understand private member access
The variable size is private but accessed via the public method getSize(), which returns 5.
Step 2: Trace the program output
The main method creates a Box object and prints the value returned by getSize(), which is 5.
Final Answer:
5 -> Option C
Quick Check:
Private accessed via public method = 5 [OK]

Quick Trick: Private accessed via public getter works [OK]

Common Mistakes:

Expecting direct access to private variable
Thinking private causes compile error here
Confusing default value with assigned value

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What will be the output of this Java code?

Step 1: Understand private member access

Step 2: Trace the program output

Final Answer:

Quick Check:

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