java 16进制 转 10进制 工具类分享

package com.hl.dziot.util;

import java.util.HashMap;
import java.util.Map;

/**
 * 转换工具类
 *
 * @author hwx
 * @date 2023/6/7
 **/
public class ConverUtils {
    /**
     * 16进制 转 10进制
     * @author hwx
     */
    public static int covert(String content){
        int number=0;
        String [] HighLetter = {"A","B","C","D","E","F"};
        Map<String,Integer> map = new HashMap<>();
        for(int i = 0;i <= 9;i++){
            map.put(i+"",i);
        }
        for(int j= 10;j<HighLetter.length+10;j++){
            map.put(HighLetter[j-10],j);
        }
        String[]str = new String[content.length()];
        for(int i = 0; i < str.length; i++){
            str[i] = content.substring(i,i+1);
        }
        for(int i = 0; i < str.length; i++){
            number += map.get(str[i])*Math.pow(16,str.length-1-i);
        }
        return number;
    }
}