java中把byte[]={49,50,51,52,53}转成字符串

java中把byte[]={49,50,51,52,53}转成字符串

public class Test{
    public static void main(String[] args){
        byte[] arr ={49,50,51,52,53};
        String str = "";
        for(int i = 0; i < arr.length; i++){
            if(i == arr.length-1){
                str += arr[i];
            }else{
                str += arr[i]+",";
            }
            
        }
        System.out.println(str);
    }
}