From a5c6b50ad0172150620a4d81aef323f725632e3f Mon Sep 17 00:00:00 2001
From: Matthias Jaros <jarlucmat@mailbox.org>
Date: Sat, 1 Aug 2026 20:01:01 +0200
Subject: Change flow when -h is given. Now instead of using System.exit throw
 an exception

---
 src/main/java/com/it_jaros/jscanner/App.java       | 1 -
 src/main/java/com/it_jaros/jscanner/CliParser.java | 3 +--
 src/main/java/com/it_jaros/jscanner/PortRange.java | 4 ++--
 3 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/main/java/com/it_jaros/jscanner/App.java b/src/main/java/com/it_jaros/jscanner/App.java
index d3652ee..bf8a078 100644
--- a/src/main/java/com/it_jaros/jscanner/App.java
+++ b/src/main/java/com/it_jaros/jscanner/App.java
@@ -43,7 +43,6 @@ public class App {
         try {
             return cliParser.parseArgs(args);
         } catch (IllegalArgumentException e) {
-            System.out.printf("Error while parsing arguments: %s%n", e.getMessage());
             cliParser.printUsageHelp();
             exitCode = 1;
             throw e;
diff --git a/src/main/java/com/it_jaros/jscanner/CliParser.java b/src/main/java/com/it_jaros/jscanner/CliParser.java
index a63b47f..4259bec 100644
--- a/src/main/java/com/it_jaros/jscanner/CliParser.java
+++ b/src/main/java/com/it_jaros/jscanner/CliParser.java
@@ -42,8 +42,7 @@ public class CliParser {
                     break;
                 case "--help", "-h":
                     printUsageHelp();
-                    System.exit(0);
-                    break;
+                    throw new RuntimeException("");
                 case "--input", "-i":
                     hostsFile = getArgument(args, ++i, currentArg);
                     break;
diff --git a/src/main/java/com/it_jaros/jscanner/PortRange.java b/src/main/java/com/it_jaros/jscanner/PortRange.java
index 3a735c5..8841162 100644
--- a/src/main/java/com/it_jaros/jscanner/PortRange.java
+++ b/src/main/java/com/it_jaros/jscanner/PortRange.java
@@ -63,12 +63,12 @@ public class PortRange {
     private void checkValue(int port) {
         if (port < MIN_PORT) {
             throw new IllegalArgumentException(
-                    String.format("Start value smaller than allowed range %s < %s", port, MIN_PORT));
+                    String.format("Port value is too low: %s < %s", port, MIN_PORT));
         }
 
         if (port > MAX_PORT) {
             throw new IllegalArgumentException(
-                    String.format("End value bigger than allowed range %s > %s", port, MAX_PORT));
+                    String.format("Port value is too high: %s > %s", port, MAX_PORT));
         }
     }
 
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