Lets first understand what Hexadecimal conversion is. Hexadecimal numbers use 16 values to represent a number. Numbers from **0-9 are expressed by digits 0-9 and 10-15 are represented by characters from A – F.**

The Hexadecimal is similar to we use in Mathematics here is the algorithm explaining decimal to hexadecimal conversion

**Algorithm**:

- Store the remainder when the number is divided by 16 in a temporary variable temp. If temp is less than 10, insert (48 + temp) in a character array otherwise if temp is greater than or equals to 10, insert (55 + temp) in the character array.
- Divide the number by 16 now
- Repeat the above two steps until the number is not equal to 0.
- Print the array in reverse order now.

#### Java Program for decimal to hexadecimal conversion

```
import java.io.*;
class GFG
{
// function to convert decimal to hexadecimal
static void decToHexa(int n)
{
// char array to store hexadecimal number
char[] hexaDeciNum = new char[100];
// counter for hexadecimal number array
int i = 0;
while(n!=0)
{
// temporary variable to store remainder
int temp = 0;
// storing remainder in temp variable.
temp = n % 16;
// check if temp < 10
if(temp < 10)
{
hexaDeciNum[i] = (char)(temp + 48);
i++;
}
else
{
hexaDeciNum[i] = (char)(temp + 55);
i++;
}
n = n/16;
}
// printing hexadecimal number array in reverse order
for(int j=i-1; j>=0; j--)
System.out.print(hexaDeciNum[j]);
}
// driver program
public static void main (String[] args)
{
int n = 2545;
decToHexa(n);
}
}
```

#### Output

`9F1`

**Check out the related programs:**

- Program to Convert String to Date
- Program to Get Current Date/time
- Program to Convert Milliseconds to Minutes and Seconds
- Program to Calculate Standard Deviation

Ask your questions about Java Program for decimal to hexadecimal conversion in Java and clarify your/others doubts by commenting. **Documentation**.

Please write to us at [email protected] to report any issue with the above content or for feedback.