Aufgabe 4 gelöst.

src/ch/zhaw/ads/ADS1_4_test.java

@@ -1,4 +1,4 @@
-/*
+
 package ch.zhaw.ads;
 
 import org.junit.jupiter.api.BeforeEach;
@@ -34,4 +34,3 @@ public class ADS1_4_test {
     }
 }
 
-*/

src/ch/zhaw/ads/WellformedXmlServer.java

@@ -8,6 +8,43 @@ public class WellformedXmlServer implements CommandExecutor {
     }
 
     public boolean checkWellformed(String arg) {
+        Stack stack = new ListStack();
+        char[] chars = arg.toCharArray();
+        for(int i = 0; i < chars.length; i++){
+            if(chars[i] == '<') {
+                boolean closing = false;
+                i++;
+                if(chars[i] == '/'){
+                    closing = true;
+                    i++;
+                }
+                String tag = "";
+                while(chars[i] != '>' && chars[i] != ' '){
+                    tag = tag + chars[i];
+                    i++;
+                }
+                if(tag.charAt(tag.length() - 1) == '/') {
 
                 }
+                else if (closing){
+                    if(!tag.equals(stack.pop())){
+                        return false;
+                    }
+                } else {
+                    stack.push(tag);
+                }
+            }
+        }
+        if(stack.isEmpty()){
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    private String getNextToken(){
+        return null;
+    }
+
+
 }