Gui input checks

src/main/java/qubo/InputData.java

@@ -5,6 +5,7 @@
 import inet.ipaddr.IPAddressSeqRange;
 import inet.ipaddr.IPAddressString;
 import utils.FileUtils;
+import utils.InvalidRangeException;
 import utils.IpList;
 import utils.PortList;
 
@@ -84,8 +85,7 @@ private void help(Options options){
         System.exit(-1);
     }
 
-    public InputData(String[] command) 
-    {
+    public InputData(String[] command) throws InvalidRangeException,NumberFormatException {
         Options options = buildOptions();
         CommandLineParser parser = new DefaultParser();
         String ipStart = "",ipEnd = "";
@@ -114,8 +114,7 @@ public InputData(String[] command)
             }
             catch (NullPointerException | IndexOutOfBoundsException e) 
             {
-            	System.out.println("Invalid IP range.");
-            	System.exit(1);
+            	throw new InvalidRangeException();
             }
 
             try
@@ -128,7 +127,7 @@ public InputData(String[] command)
 
             portrange = new PortList(cmd.getOptionValue("ports"));
             ping = !cmd.hasOption("noping");
-        } catch (ParseException e) 
+        } catch (ParseException  e)
         {
             help(options); //help contiene system.exit
         }
@@ -167,7 +166,7 @@ public IpList getIpList() {
     public PortList getPortrange() {
         return portrange;
     }
-    public int getThreads() {
+    public int getThreads() throws NumberFormatException{
         return Integer.parseInt(cmd.getOptionValue("th"));
     }
     public int getTimeout() {

src/main/java/qubo/QuboInstance.java

@@ -69,7 +69,7 @@ public void run()
 
 	}
 
-	private void checkServersExecutor() throws InterruptedException {
+	private void checkServersExecutor() throws InterruptedException,NumberFormatException {
 		ExecutorService checkService = Executors.newFixedThreadPool(inputData.getThreads());
 		Log.logln("Checking Servers...");
 

src/main/java/qubo/gui/Confirm.java

@@ -0,0 +1,9 @@
+package qubo.gui;
+
+import javax.swing.*;
+
+public class Confirm {
+    public static boolean requestConfirm(String text){
+        return JOptionPane.showConfirmDialog(null, text) == 0;
+    }
+}

src/main/java/qubo/gui/InstanceRunnable.java

@@ -1,6 +1,7 @@
 package qubo.gui;
 
 import qubo.QuboInstance;
+import utils.InvalidRangeException;
 import utils.Log;
 
 class InstanceRunnable implements Runnable {
@@ -20,7 +21,13 @@ public InstanceRunnable(QuboInstance quboInstance, MainWindow window){ //window
 
     @Override
     public void run() {
-        quboInstance.run();
+        try{
+            quboInstance.run();
+        }
+        catch (NumberFormatException e){
+            if(Confirm.requestConfirm("Check input and relaunch program, would you like to see an example configuration?"))
+                window.exampleConf();
+        }
         window.idle();
         Log.logln("Stopped");
     }