Survey hw3

Junior Yr/Spring_2012/cs350-SoftwareDesign/survey/src/AnswerSheet.java

@@ -43,6 +43,21 @@ public void setAns(ArrayList<Response> ans){
 	public Response getAns(int i){
 		return this.correctAns.get(i);
 	}
+
+	public void setAns(Response res){
+		this.correctAns.add(res);
+	}
+
+	public void setAns(int i, Response res){
+		this.correctAns.add(i, res);
+	}
+
+	public void setAns(int i, String input){
+		Response res = new Response();
+		res.setResponse(input);
+		this.setAns(i, res);
+	}
+
 	public void addAns(Response r){
 		this.correctAns.add(r);
 	}

Junior Yr/Spring_2012/cs350-SoftwareDesign/survey/src/DisplayDriver.java

@@ -1,5 +1,10 @@
+import java.io.Serializable;
 
-public abstract class DisplayDriver {
+
+public abstract class DisplayDriver implements Serializable {
+
+
+	private static final long serialVersionUID = 5320033258894212217L;
 
 	public DisplayDriver(){
 

Junior Yr/Spring_2012/cs350-SoftwareDesign/survey/src/Display_Singleton.java

@@ -0,0 +1,22 @@
+
+public class Display_Singleton {
+	private static Display_Singleton instance = null;
+	private DisplayDriver mainDriver;
+
+	protected Display_Singleton(){
+		mainDriver = new TextDriver();
+	}
+
+	public static Display_Singleton getInstance(){
+		if(instance == null)
+			instance = new Display_Singleton();
+
+		return instance;
+	}
+
+	public DisplayDriver getMainDriver(){
+		return this.mainDriver;
+
+	}
+
+}

Junior Yr/Spring_2012/cs350-SoftwareDesign/survey/src/Essay.java

@@ -49,4 +49,8 @@ public String getQuestionType() {
 		return questionType;
 	}	
 
+	public void modify(){
+		this.changePrompt();
+	}
+
 }