added set numbers function

src/main/java/Vault.java

@@ -10,6 +10,7 @@ public class Vault implements VaultInterface {
     public int PWLength;
     public boolean haveCapitals;
     public boolean hasSpecialChars;
+    public boolean hasNumbers;
     InputStream inputS = System.in;
     OutputStream outputS = System.out;
 
@@ -105,4 +106,19 @@ public class Vault implements VaultInterface {
             println("Your PWs don´t have special characters anymore.");
         }
     }
+
+    public void SetNumbers() {
+        println("Should you PW have numbers? Type in yes or no.");
+
+        Scanner scan = new Scanner(inputS);
+        String input = scan.nextLine();
+
+        if(input.equals("yes")){
+            hasNumbers = true;
+            println("Your PWs contains now numbers.");
+        }else if(input.equals("no")){
+            hasNumbers = false;
+            println("Your PWs don´t have numbers anymore.");
+        }
+    }
 }

src/test/java/VaultTest.java

@@ -142,6 +142,26 @@ public class VaultTest {
         assertTrue(outputStream.toString().contains("don´t"));
     }
 
+    @Test
+    void setNumbersTest() {
+        vlt.inputS = new ByteArrayInputStream("yes\n".getBytes(StandardCharsets.UTF_8));
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        vlt.outputS = outputStream;
+        vlt.SetNumbers();
+
+        assertTrue(outputStream.toString().startsWith("Should"));
+        assertTrue(vlt.hasNumbers = true);
+        assertTrue(outputStream.toString().contains("contain"));
+
+        vlt.inputS = new ByteArrayInputStream("no\n".getBytes(StandardCharsets.UTF_8));
+        vlt.outputS = outputStream;
+        vlt.SetNumbers();
+
+        assertTrue(outputStream.toString().startsWith("Should"));
+        assertFalse(vlt.hasNumbers = false);
+        assertTrue(outputStream.toString().contains("don´t"));
+    }
+
     private ByteArrayInputStream getEmptyStringInputStream() {
         return new ByteArrayInputStream("".getBytes(StandardCharsets.UTF_8));
     }