Assignment6 | Computer Science homework help
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Minimal Submitted Files
You are required, but not limited, to turn in the following source files:
Assignment6.java (No need to modify)
Movie.java (No need to modify, modified version from the assignment 4)
Review.java (No need to modify)
CreatePane.java – to be completed
ReviewPane.java – to be completed
You might need to add more methods than the specified ones.
Skills to be Applied:
JavaFX, ArrayList
Classes may be needed:
Button, TextField, TextArea, Label, RadioButton, ListView, and ActionHandler. You may use other classes.
Here is the Assignmnet6.java:
import javafx.application.Application;import javafx.stage.Stage;import javafx.scene.Scene;import javafx.scene.control.Tab;import javafx.scene.control.TabPane;import javafx.scene.layout.StackPane;import java.util.ArrayList;public class Assignment6 extends Application{ private TabPane tabPane; private CreatePane createPane; private ReviewPane reviewPane; private ArrayList<Movie> movieList; public void start(Stage stage) { StackPane root = new StackPane(); //movieList to be used in both createPane & reviewPane movieList = new ArrayList<Movie>(); reviewPane = new ReviewPane(movieList); createPane = new CreatePane(movieList, reviewPane); tabPane = new TabPane(); Tab tab1 = new Tab(); tab1.setText(“Movie Creation”); tab1.setContent(createPane); Tab tab2 = new Tab(); tab2.setText(“Movie Review”); tab2.setContent(reviewPane); tabPane.getSelectionModel().select(0); tabPane.getTabs().addAll(tab1, tab2); root.getChildren().add(tabPane); Scene scene = new Scene(root, 700, 400); stage.setTitle(“Movie Review Apps”); stage.setScene(scene); stage.show(); } public static void main(String[] args) { launch(args); }}
Here is Movie.java:
public class Movie
{
private String movieTitle;
private int year;
private int length;
private Review bookReview;
//Constructor to initialize all member variables
public Movie()
{
movieTitle = “?”;
length = 0;
year = 0;
bookReview = new Review();
}
//Accessor methods
public String getMovieTitle()
{
return movieTitle;
}
public int getLength()
{
return length;
}
public int getYear()
{
return year;
}
public Review getReview()
{
return bookReview;
}
//Mutator methods
public void setMovieTitle(String aTitle)
{
movieTitle = aTitle;
}
public void setLength(int aLength)
{
length = aLength;
}
public void setYear(int aYear)
{
year = aYear;
}
public void addRating(double rate)
{
bookReview.updateRating(rate);
}
//toString() method returns a string containg the information on the movie
public String toString()
{
String result = “nMovie Title:tt” + movieTitle
+ “nMovie Length:tt” + length
+ “nMovie Year:tt” + year
+ “n” + bookReview.toString() + “nn”;
return result;
}
}
Here is Review.java:
import java.text.DecimalFormat;public class Review{ private int numberOfReviews; private double sumOfRatings; private double average; //Constructor to initialize all member variables public Review() { numberOfReviews = 0; sumOfRatings = 0.0; average = 0.0; } //It updates the number of REviews and avarage based on the //an additional rating specified by its parameter public void updateRating(double rating) { numberOfReviews++; sumOfRatings += rating; if (numberOfReviews > 0) { average = sumOfRatings/numberOfReviews; } else average = 0.0; } //toString() method returns a string containg its review average //and te number of Reviews public String toString() { DecimalFormat fmt = new DecimalFormat(“0.00”); String result = “Reviews:t” + fmt.format(average) + “(” + numberOfReviews + “)”; return result; } }
Here is CreatePane.java:
import java.util.ArrayList;
import javafx.scene.layout.HBox;
//import all other necessary javafx classes here
//—-
public class CreatePane extends HBox
{
private ArrayList<Movie> movieList;
//The relationship between CreatePane and ReviewPane is Aggregation
private ReviewPane reviewPane;
//constructor
public CreatePane(ArrayList<Movie> list, ReviewPane rePane)
{
this.movieList = list;
this.reviewPane = rePane;
//Step #1: initialize each instance variable and set up the layout
//—-
//create a GridPane hold those labels & text fields
//consider using .setPadding() or setHgap(), setVgap()
//to control the spacing and gap, etc.
//—-
//You might need to create a sub pane to hold the button
//—-
//Set up the layout for the left half of the CreatePane.
//—-
//the right half of this pane is simply a TextArea object
//Note: a ScrollPane will be added to it automatically when there are no
//enough space
//Add the left half and right half to the CreatePane
//Note: CreatePane extends from HBox
//—-
//Step #3: register source object with event handler
//—-
} //end of constructor
//Step 2: Create a ButtonHandler class
//ButtonHandler listens to see if the button “Create a Movie” is pushed or not,
//When the event occurs, it get a movie’s Title, Year, and Length
//information from the relevant text fields, then create a new movie and add it inside
//the movieList. Meanwhile it will display the movie’s information inside the text area.
//It also does error checking in case any of the textfields are empty or non-numeric string is typed
private class ButtonHandler implements EventHandler<ActionEvent>
{
//Override the abstact method handle()
public void handle(ActionEvent event)
{
//declare any necessary local variables here
//—
//when a text field is empty and the button is pushed
if ( //—- )
{
//handle the case here
}
else //for all other cases
{
//—-
//at the end, don’t forget to update the new arrayList
//information on the ListView of the ReviewPane
//—-
//Also somewhere you will need to use try & catch block to catch
//the NumberFormatException
}
} //end of handle() method
} //end of ButtonHandler class
}
Here is ReviewPane.java
import javafx.scene.control.ListView;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.layout.VBox;
import javafx.event.ActionEvent; //**Need to import to handle event
import javafx.event.EventHandler; //**Need to import to handle event
import java.util.ArrayList;
import javafx.scene.layout.HBox;
//import all other necessary javafx classes here
//—-
public class ReviewPane extends VBox
{
private ArrayList<Movie> movieList;
//A ListView to display movies created
private ListView<Movie> movieListView;
//declare all other necessary GUI variables here
//—-
//constructor
public ReviewPane(ArrayList<Movie> list)
{
//initialize instance variables
this.movieList = list;
//set up the layout
//—-
//ReviewPane is a VBox – add the components here
//—-
//Step #3: Register the button with its handler class
//—-
} //end of constructor
//This method refresh the ListView whenever there’s new movie added in CreatePane
//you will need to update the underline ObservableList object in order for ListView
//object to show the updated movie list
public void updateMovieList(Movie newMovie)
{
//——-
}
//Step 2: Create a RatingHandler class
private class RatingHandler implements EventHandler<ActionEvent>
{
//Override the abstact method handle()
public void handle(ActionEvent event)
{
//When “Submit Review” button is pressed and a movie is selected from
//the list view’s average rating is updated by adding a additional
//rating specified by a selected radio button
if (//—-)
{
//—-
}
}
} //end of RatingHandler
} //end of ReviewPane class
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