@@ -54,7 +54,7 @@ javadoc.splitindex=true
 javadoc.use=true
 javadoc.version=false
 javadoc.windowtitle=
-main.class=a_hello_world.HelloWorld
+main.class=a_stage_button_event.FirstApp
 manifest.file=manifest.mf
 meta.inf.dir=${src.dir}/META-INF
 mkdist.disabled=false
 
@@ -1,12 +1,14 @@
-package a_hello_world;
+package a_stage_button_event;
 
 import javafx.application.*;
+import javafx.event.ActionEvent;
+import javafx.event.EventHandler;
 import javafx.scene.*;
 import javafx.scene.control.Button;
 import javafx.scene.layout.StackPane;
 import javafx.stage.*;
 
-public class HelloWorld extends Application {
+public class FirstApp extends Application implements EventHandler<ActionEvent> {
 
     Button button;
 
@@ -21,7 +23,9 @@ public void start (Stage primaryStage) throws Exception{
 
         primaryStage.setTitle("Hello World");
 
-        button = new Button("Click me");
+        button = new Button();
+        button.setText("Click me");
+        button.setOnAction(this);
 
         StackPane layout = new StackPane();
         layout.getChildren().add(button);
@@ -31,4 +35,11 @@ public void start (Stage primaryStage) throws Exception{
         primaryStage.show();
 
     }
+    
+    @Override
+    public void handle(ActionEvent event){
+        if(event.getSource() == button){
+            System.out.println("Hello World");
+        }
+    }
 }
@@ -0,0 +1,43 @@
+package b_innerclass_lambda;
+
+import javafx.application.Application;
+import javafx.event.ActionEvent;
+import javafx.event.EventHandler;
+import javafx.scene.Scene;
+import javafx.scene.control.Button;
+import javafx.scene.layout.StackPane;
+import javafx.stage.Stage;
+
+public class InnerClass extends Application {
+    
+    Button button;
+    
+    public static void main(String []args){
+        launch(args);
+    }
+
+    public void start(Stage primaryStage){
+        primaryStage.setTitle("Inner Class and Lambdas");
+        button = new Button();
+        button.setText("Click Me");
+        
+        //you don't have to check multiple resources
+        //with anonymous classes, since they are already
+        //implemented for a specific object
+        //downside: needs to be implemented for each
+        //object..
+        button.setOnAction(new EventHandler<ActionEvent>(){
+        
+            @Override
+            public void handle(ActionEvent event){
+                System.out.println("I am anonymous class");
+            }
+        });
+        
+        StackPane layout = new StackPane();
+        layout.getChildren().add(button);
+        Scene scene = new Scene(layout, 300, 250);
+        primaryStage.setScene(scene);
+        primaryStage.show();
+    }
+}
@@ -0,0 +1,32 @@
+package c_lambdas_intro;
+
+import javafx.application.Application;
+import static javafx.application.Application.launch;
+import javafx.scene.Scene;
+import javafx.scene.control.Button;
+import javafx.scene.layout.StackPane;
+import javafx.stage.Stage;
+
+public class LambdasIntro extends Application {
+    
+    Button button;
+    
+    public static void main(String []args){
+        launch(args);
+    }
+
+    public void start(Stage primaryStage){
+        primaryStage.setTitle("Inner Class and Lambdas");
+        button = new Button();
+        button.setText("Click Me");
+        
+        //Lambdas are available only with Java 8 and above..
+        button.setOnAction(e -> System.out.println("First Lambda Expression"));
+        
+        StackPane layout = new StackPane();
+        layout.getChildren().add(button);
+        Scene scene = new Scene(layout, 300, 250);
+        primaryStage.setScene(scene);
+        primaryStage.show();
+    }
+}