Java Convert Decimal to Hexadecimal

Let's see the simple example of converting decimal to binary in java.

public class DecimalToHexExample1{  
public static void main(String args[]){  
System.out.println(Integer.toHexString(10));  
System.out.println(Integer.toHexString(15));  
System.out.println(Integer.toHexString(289));  
}}

Output:

a
f
121

Java Decimal to Hex conversion: Custom Logic

We can convert decimal to hex in java using custom logic.

public class DecimalToHexExample2{    
public static String toHex(int decimal){    
     int rem;  
     String hex="";   
     char hexchars[]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};  
    while(decimal>0)  
     {  
       rem=decimal%16;   
       hex=hexchars[rem]+hex;   
       decimal=decimal/16;  
     }  
    return hex;  
}    
public static void main(String args[]){      
     System.out.println("Hexadecimal of 10 is: "+toHex(10));  
     System.out.println("Hexadecimal of 15 is: "+toHex(15));  
     System.out.println("Hexadecimal of 289 is: "+toHex(289));  
}}

Output:

Hexadecimal of 10 is: A
Hexadecimal of 15 is: F
Hexadecimal of 289 is: 121