src/main/java/de/gnmyt/SQLToolkit/manager/InsertManager.java

@@ -81,12 +81,9 @@ public class InsertManager {
 
     /**
      * Execute the current SQL query
-     *
-     * @return this class
      */
-    public InsertManager execute() {
+    public void execute() {
         connection.update(prepareStatement(), values.values().toArray());
-        return this;
     }
 
 }

src/main/java/de/gnmyt/SQLToolkit/manager/UpdateManager.java

@@ -88,12 +88,9 @@ public class UpdateManager {
 
     /**
      * Update the entries with your current conditions
-     *
-     * @return this class
      */
-    public UpdateManager execute() {
+    public void execute() {
         connection.update(prepareUpdateStatement(), getTempParams().toArray());
-        return this;
     }
 
     /**