Help on execute curl command in peoplecode

I am trying to make a curl command call in my people code like below - this is a get API call to the vendor to get the access-token (or called bearer) back through a Oauth2 authentication scheme:

Declare Function ExecutecURLCommand PeopleCode UM_FUNCLIB_RCT.DESCR FieldFormula;

Local string &strURL = "curl -X GET  -H ""Authorization: Basic xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"" -H ""customer-id: 100000"" -H ""trading-partner: xxxxxxx"" https://sample.com/v2/oauth";

Local string &strResponse = ExecutecURLCommand(&strURL);

I have the function defined below -

Function ExecutecURLCommand(&cURLCommand) Returns string

  

   Local JavaObject &runtime = GetJavaClass("java.lang.Runtime").getRuntime();

   Local JavaObject &process = &runtime.exec(&cURLCommand);

   Local JavaObject &inputStreamReader = CreateJavaObject("java.io.InputStreamReader", &process.getInputStream());