convert int to hex java

1public class DecimalToHexExample2{    
2public static String toHex(int decimal){    
3     int rem;  
4     String hex="";   
5     char hexchars[]={'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};  
6    while(decimal>0)  
7     {  
8       rem=decimal%16;   
9       hex=hexchars[rem]+hex;   
10       decimal=decimal/16;  
11     }  
12    return hex;  
13}    
14public static void main(String args[]){      
15     System.out.println("Hexadecimal of 10 is: "+toHex(10));  
16     System.out.println("Hexadecimal of 15 is: "+toHex(15));  
17     System.out.println("Hexadecimal of 289 is: "+toHex(289));  
18}} 

1int integer = 18;
2
3String hexString = Integer.toHexString(integer);