Hi I wish to override a function in this scene class which is called updatestatu

Question

Hi I wish to override a function in this scene class which is called updatestatus bar and create and register a mousemotion listener so that when the mouse is moved and is on top of an object such as a turtle tree or person which are implemented by different classes then it should display the object name in
the status bar at the bottom of the window that is implemented using GUI. Here is scene class. Can anyone help me?

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import java.awt.Graphics;
import javax.swing.JPanel;
import javax.swing.JLabel;
import java.awt.Graphics;
import java.util.ArrayList;
import java.awt.Dimension;
import java.util.Random;

public class Scene extends JPanel
{
protected ArrayList<SceneItem> sceneItems;
private JLabel statusLabel;
private long randomSeed;
private Random random;

public Scene(JLabel sl)
{
sceneItems = new ArrayList<SceneItem>();
statusLabel = sl;
random = new Random();
randomSeed = 100;
}

public void setRandomSeed(long rs)
{
randomSeed = rs;
}

// addScene() determines the number of each type of item to add to the scene.
// Until a particular object type is implemented, you may want to comment its line out.
private void addScene()
{
addSceneItems(40, "Tree");
// [TODO: as you implement the classes listed below, uncomment out each line to test
//addSceneItems(10, "House");
//addSceneItems(30, "Person");
//addSceneItems(2, "GrowingTree");
//addSceneItems(5, "Turtle");

}

// addSceneItems() adds an item of a given type to a random location on the
// screen. Until each type of object is implemented, you may want to comment
// out the sections which create some of the objects.
private void addSceneItems(int num, String type)
{
Dimension dim = getSize();
dim.setSize(dim.getWidth()-30, dim.getHeight()-30);

synchronized(sceneItems)
{
for (int i=0; i<num; i++) {
int x = random.nextInt(dim.width);
int y = random.nextInt(dim.height);

if (type.equals("Tree")) {
sceneItems.add(new Tree(x, y));
} // [TODO: as you implement the classes listed below, uncomment out each clause to test
/*else if (type.equals("House")) {
sceneItems.add(new House(x, y));
} else if (type.equals("Person")) {
int xs = random.nextInt(21) - 10;
int ys = random.nextInt(21) - 10;
sceneItems.add(new Person(x, y, xs, ys));
} else if (type.equals("GrowingTree")) {
sceneItems.add(new GrowingTree(x, y, 1, 2));
} else if (type.equals("Turtle")) {
sceneItems.add(new Turtle(x, y));
}*/
}
}
repaint();
}

// reset() causes a new scene to be created from scratch
public void reset()
{
// [TODO: uncomment out the following few lines once the necessary functionality has been implemented for the Person class
//Person.setCount(0);
//Person.setNumHome(0);
//Person.setNumCrashed(0);
sceneItems.clear();

if (randomSeed < 0) {
randomSeed = System.currentTimeMillis();
}
random.setSeed(randomSeed);

addScene();
updateStatusBar();
}

// updateScene() is the function which causes every scene item to get updated
// at each time step. It just calls the update() function on each item.
public void updateScene()
{
Dimension dim = getSize();

synchronized(sceneItems)
{
for (SceneItem si : sceneItems) {
si.update(dim.width, dim.height);
}
}
}

// paingComponent() is the function used by the windowing system to draw the contents
// of the window and is called by the system itself when some portion of the window
// needs to be drawn or re-drawn
public void paintComponent(Graphics g)
{
super.paintComponent(g);
synchronized(sceneItems)
{
for (SceneItem si : sceneItems) {
si.draw(g);
}
}
}

// updateStatusText() updates the text in the status bar at the bottom of the frame
// [TODO: in CrashScene this should be overridden to give stats about the people in the scene.]
protected String getStatusBarText()
{
return "";
}

public void updateStatusBar()
{
statusLabel.setText(getStatusBarText());
}
}

Explanation / Answer

import java.awt.Graphics; import javax.swing.JPanel; import javax.swing.JLabel; import java.awt.Graphics; import java.util.ArrayList; import java.awt.Dimension; import java.util.Random; public class Scene extends JPanel { protected ArrayList sceneItems; private JLabel statusLabel; private long randomSeed; private Random random; public Scene(JLabel sl) { sceneItems = new ArrayList(); statusLabel = sl; random = new Random(); randomSeed = 101; } public void setRandomSeed(long rs) { randomSeed = rs; } // addScene() determines the number of each type of item to add to the scene. // Until a particular object type is implemented, you may want to comment its line out. private void addScene() { addSceneItems(40, "Tree"); // [TODO: as you implement the classes listed below, uncomment out each line to test addSceneItems(10, "House"); addSceneItems(30, "Person"); addSceneItems(2, "GrowingTree"); addSceneItems(5, "Turtle"); } // addSceneItems() adds an item of a given type to a random location on the // screen. Until each type of object is implemented, you may want to comment // out the sections which create some of the objects. private void addSceneItems(int num, String type) { Dimension dim = getSize(); dim.setSize(dim.getWidth()-30, dim.getHeight()-30); synchronized(sceneItems) { for (int i=0; i

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