java十进制转十六进制算法 十进制转十六进制 java

import java.util.Scanner;       
public class Decimal2HexConversion {        
    public static void main(String[] args){        
        Scanner input = new Scanner(System.in);        
        System.out.print("输入一个十进制数: ");        
        int decimal = input.nextInt();        
        System.out.println("十进制数 " + decimal +"的十六进制数为: " + decimalToHex(decimal));        
        if(!input.hasNext())        
            input.close();        
    }        
    
    public static String decimalToHex(int decimal) {        
        String hex = "";        
        while(decimal != 0) {        
            int hexValue = decimal % 16;        
            hex = toHexChar(hexValue) + hex;        
            decimal = decimal / 16;        
        }        
        return  hex;        
    }        
    //将0~15的十进制数转换成0~F的十六进制数        
    public static char toHexChar(int hexValue) {        
        if(hexValue <= 9 && hexValue >= 0)        
            return (char)(hexValue + '0');        
        else        
            return (char)(hexValue - 10 + 'A');        
    }        
}