adding deletebutton and function to handle delete all

src/sample/Controller.java

@@ -24,6 +24,15 @@ public class Controller {
         tm.add(t);
         tm.displayList();
 
+    }
+
+    public void handleHurlAll() {
 
+        //get the thought manager
+        ThoughtManager tm = ThoughtManager.getInstance();
+
+        //delete all thoughts and display the list
+        tm.hurl();
+        tm.displayList();
     }
 }

src/sample/sample.fxml

@@ -7,7 +7,7 @@
 <?import javafx.scene.text.Font?>
 <?import javafx.scene.text.Text?>
 
-<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="498.0" prefWidth="700.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
+<AnchorPane id="hurlAllThoughts" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="498.0" prefWidth="700.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
    <children>
       <Button id="submitButton" layoutX="83.0" layoutY="432.0" mnemonicParsing="false" onAction="#handleSubmit" prefHeight="35.0" prefWidth="129.0" text="Submit thought" />
       <TextArea id="textBox" fx:id="textArea" layoutX="58.0" layoutY="316.0" prefHeight="106.0" prefWidth="307.0" promptText="Write your thought here..." />
@@ -19,7 +19,7 @@
         <content>
           <AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="256.0" prefWidth="701.0">
                <children>
-                  <Text id="thoughtId" fill="#755252" layoutX="37.0" layoutY="36.0" strokeType="OUTSIDE" strokeWidth="20.0" text="Text" wrappingWidth="48.55792045593262">
+                  <Text id="thoughtId" fill="#755252" layoutX="37.0" layoutY="36.0" strokeType="OUTSIDE" strokeWidth="20.0" text="Text" wrappingWidth="500">
                      <font>
                         <Font size="14.0" />
                      </font>
@@ -28,5 +28,6 @@
             </AnchorPane>
         </content>
       </ScrollPane>
+      <Button layoutX="531.0" layoutY="10.0" mnemonicParsing="false" onAction="#handleHurlAll" text="Hurl all your thoughts" />
    </children>
 </AnchorPane>