🚀 Programming Example

Wrapper class Wrapping and Unwrapping example 2

👁 26,740 Views

💻 Practical Program

📘 Step Learning

Learn this program step-by-step with algorithm, source code, output and detailed explanation.

💻 Program Code

 public class WrappingUnwrapping {

   public static void main(String args[]) {
      Integer x = 15;

      // Returns byte primitive data type
      System.out.println( x.byteValue() );

      // Returns double primitive data type
      System.out.println(x.doubleValue());

      // Returns long primitive data type
      System.out.println( x.longValue() );
   }
}

🖥 Program Output

15
15.0
15
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🎯 How to learn from this example

First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.

🔥 Practice suggestion

Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.

⚡ Quick Practice Flow

Follow this learning sequence for better understanding.

Read the topic carefully
Understand the algorithm
Study the code line-by-line
Check the output result
Practice by modifying logic