unit test & packages

Code/Steiner/packagesStuff/src/App.java

@@ -1,5 +1,8 @@
 public class App {
     public static void main(String[] args) throws Exception {
-        System.out.println("Hello, World!");
+        // System.out.println(Txt.Left("Hello World", 5));
+        // System.out.println(Txt.Left("Hello World", -2));
+        // System.out.println(Txt.Left("Hello World", 122));
+        // System.out.println(Txt.Left("Hello World", 0));
     }
 }

Code/Steiner/packagesStuff/src/tech/photofuel/util/Txt.java

@@ -0,0 +1,16 @@
+package tech.photofuel.util;
+
+public class Txt {
+    public static String Left(String text, int anzahlZeichen) {
+        try {
+            if (text.length() < anzahlZeichen) {
+                return text;
+            } else {
+                return text.substring(0, anzahlZeichen);
+            }
+        } catch (Exception e) {
+            System.out.println("Invalid input error: " + e);
+            return null;
+        }
+    }
+}