java 10进制转16进制带ox格式输出

如下代码：

    public static void main(String[] args) throws IOException {
        int num=3000;
        ByteArrayOutputStream baos=new ByteArrayOutputStream();
        DataOutputStream out=new DataOutputStream(baos);
        out.writeInt(num);
        byte[] bs=baos.toByteArray();
        for(byte b:bs) {
            System.out.print("0x");
            System.out.print(Integer.toString(b>>4&0xF,16).toUpperCase());
            System.out.print(Integer.toString(b&0xF,16).toUpperCase());
            System.out.print(" ");
        }
    }