Start test body after jar file loading (from JAVA) is finished - multithreading

Question

I want to write UNIT test with SOAP webservices. Webservices work in other jar file, which I try to load Runtime.getRuntime().exec(// java - jar ...). Loading jar file takes 2 min. When loading is in new Thread the test ends before loading jar file will be finished. If loading is in main thread, test is not finished. I try to listen HTTP response with while cycle, but when cycle is working, the jar file is not loading.
#Before
public void setUp() throws Exception {
// Get path of jar file
thread = new Thread() {
public void run() {
try {
Process process = Runtime.getRuntime().exec(path-to-java.exe -jar webservices.jar);
process.waitFor();
process.destroy();
} catch (Exception e) {
e.printStackTrace();
}
}
};
thread.start();
int responseCode;
do {
responseCode = getResponseCodeHTTP("http://localhost:8080/services");
} while (responseCode < 200 || responseCode >= 400);
System.out.println("Web services have loaded");
}
public int getResponseCodeHTTP(String urlToRead) throws IOException {
URL url = new URL(urlToRead);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
int result;
try {
conn.connect();
result = conn.getResponseCode();
} catch (ConnectException e){
return 500;
}
return result;
}

Answer 1

OK. I want to write test, which will start the webservices from jar file (loading process takes 1.5 min) and then execute test. To start web services I use Runtime.getRuntime().exec and to understand that them started I use HTTP response code. When the code [200-400) , it means the ws started OK.
I tried to debug code inside new Thread and added code with InputStreamReader and while cycle.
String line;
InputStream stdout = process.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(stdout));
while ((line = reader.readLine()) != null)
System.out.println("[Stdout] " + line);
And test successfully executed. The when I removed the while cycle with readline, the problem had repeated.
I have not understand yet why it worked.