[java] Running C Code in java

public static void train_sarray(String[] cmdline) throws IOException{	String line;	Process p = Runtime.getRuntime().exec(new String[] {"C:\\sarray_exe\\train_sarray.exe", "-a", "13"});	        boolean processRunning = true;			     	String inputFile = "C:\\sarray_exe\\T2.string";	FileReader reader = new FileReader(inputFile);	BufferedReader in = new BufferedReader(reader);			     	FileWriter writer = new FileWriter("C:\\sarray_exe\\t2.sarray");			     	BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream()));			     	String line2;			     	while(processRunning)	{	 line = in.readLine();	 if(line != null)	 {		 System.out.println("Write to outputStream");		 System.out.println(line); // Output seems fine	         //write to outputStream	 }                 // SYSTEM HANGS HERE!!!!!!!!!!!	    	 line2 = input.readLine();	    	 if(line2 != null)	    	 {	        	 System.out.println("Write to fileWriter");			 //write to fileWriter			 writer.write(line2);		 }			    	 		 try		 {			int i = p.exitValue();			System.out.println(i);			processRunning = false;		 }		 catch(IllegalThreadStateException e)	         {			// Carry On    		 		 }}