Roborio Connecting to Raspberry Pi

[mkmeral]

I am right now trying to get message from raspberry pi using roborio(java). I have configured Raspberry as web server, and i access to a file from it. In my computer (not wpilib) it works, I can get the data as I should normally do. However, when, try to upload the code below to the roborio i get the error below. Any suggestions? public void networking(){ // TODO Auto-generated method stub

try{
String wholetext = "";
URL oracle = new URL("http://10.41.91.109/a");
URLConnection yc = oracle.openConnection();
BufferedReader in;
in = new BufferedReader(new InputStreamReader(
yc.getInputStream()));

String inputLine;
while ((inputLine = in.readLine()) != null)
wholetext += inputLine;
in.close();
SmartDashboard.putString("Deger", wholetext);
}catch(Exception e){
SmartDashboard.putString("NETWORK:", e.getMessage());
}

}

BUILD FAILED C:\Users___\wpilib\java\current\ant\build.xml:71: Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK. It is currently set to "C:\Program Files\Java\jre1.8.0_111"