从Java执行命令时如何在Java中将cmd response（Locale specific）转换为ASCII值

Question

我正在从Java程序执行命令，我必须在不同的语言环境中运行该程序，而从日语语言环境中运行该程序，我得到日语字符作为响应，但是Java程序给我输出乱码，如何转换这些字符转换为JAVA中的ASCII字符

       Runtime rt = Runtime.getRuntime();
        Process proc = rt.exec(command);

        br = new BufferedReader(new InputStreamReader(proc.getInputStream()));
        br1 = new BufferedReader(new InputStreamReader(proc.getErrorStream()));
        proc.waitFor();
        String str = br.readLine();
        while (str != null) 
        {
            result = result + str + "\n";//NO I18N
            str = br.readLine();
        }
        str = br1.readLine();
        while (str != null) 
        {
            result = result + str;
            str = br1.readLine();
        }