🚀 Programming Example

Double Wrapper class in Java

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💻 Practical Program

📘 Step Learning

In this program you will learn about Double Wrapper class in Java.

💻 Program Code

public class WrapperClassDouble {
public static void main(String args[]){

       Double b=new Double(16782.0);
       // Double d=2768;  // incompatible types
       // to solve this you have to give D or d after digits
       Double d = 7686.9d;


       System.out.println(b);
       System.out.println(d);
 }
}

/*
Wrapper class in java provides the mechanism to convert primitive
into object and object into primitive.

In this programmig we are showing a example of Double wrapper class.

Conversion mechanism, We will see later

*/

🖥 Program Output

16782.0
7686.9
Press any key to continue . . .

🎯 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