Need help writing java code

import java.beans.PropertyChangeListener; import java.beans.PropertyChangeSupport;

//--------------------------------------------------------------- /** * The right triangle model. Allows users to update the base and height * separately. * public class RTModel { // Constants. /** * Used to signal a change in the base value property of the model. */ public static final String BASE_CHANGE = "Base Changed"; /** * Used to signal a change in the height value property of the model. */ public static final String HEIGHT_CHANGE = "Height Changed"; /** * The maximum size of each of the two non-hypotenuse sides of the triangle. */ public static final double MAX_SIDE = 100.0; /** * The initial size of the base. */ private double base = 35.0; /** * The initial size of the height. */ private double height = 35.0; /** * The initial size of the hypotenuse based upon base and height. */ private double hypotenuse = Math .sqrt(Math.pow(this.base, 2.0) + Math.pow(this.height, 2.0));; /** * Allows views to listen to generic changes in the model. */ private final PropertyChangeSupport pcs = new PropertyChangeSupport(this);

// --------------------------------------------------------------- /** * Attaches listeners to the model. * * @param listener * The listener to attach to the model. */ public void addPropertyChangeListener( final PropertyChangeListener listener) { this.pcs.addPropertyChangeListener(listener); }

// --------------------------------------------------------------- /** * Attaches listeners to the model for a particular property. * * @param propertyName * The name of the property to listen for. * @param listener * The listener to attach to the model. */ public void addPropertyChangeListener(final String propertyName, final PropertyChangeListener listener) { this.pcs.addPropertyChangeListener(propertyName, listener); }

// --------------------------------------------------------------- /** * Returns the value of the model's base. * * @return the value of the model's base. */ public double getBase() { return this.base; }

// --------------------------------------------------------------- /** * Returns the value of the model's height. * * @return the value of the model's height. */ public double getHeight() { return this.height; }

// --------------------------------------------------------------- /** * Returns the hypotenuse. * * @return the hypotenuse. */ public double getHypotenuse() { return this.hypotenuse; }

// --------------------------------------------------------------- /** * Assigns a value to the model's base and updates all views accordingly. * * @param newBase * The base value to set. */ public void setBase(final double newBase) { this.base = Math.min(Math.max(0, newBase), RTModel.MAX_SIDE); this.setHypotenuse(); // Inform listeners the model is updated. this.pcs.firePropertyChange(RTModel.BASE_CHANGE, null, this.base); }

// --------------------------------------------------------------- /** * Assigns a value to the model's height and updates all views accordingly. * * @param newHeight * The height value to set. */ public void setHeight(final double newHeight) { this.height = Math.min(Math.max(0, newHeight), RTModel.MAX_SIDE); this.setHypotenuse(); // Inform listeners the model is updated. this.pcs.firePropertyChange(RTModel.HEIGHT_CHANGE, null, this.height); }

// --------------------------------------------------------------- /** * Sets the value of the hypotenuse. (Not public since the hypotenuse cannot * be changed independently of the base or height.) */ private void setHypotenuse() { this.hypotenuse = Math .sqrt(Math.pow(this.base, 2.0) + Math.pow(this.height, 2.0)); }

// --------------------------------------------------------------- }

2. Add an entirely new view named RTSameview that does the following It has a button that sets the base and height to the same value. That value should be the average of the current base and height. Has a label that shows the common value of the base and height if both the base and height are the same, and is blank otherwise. Has a label that shows the value of the hypotenuse at any time. Has an increment button that increments both the base and height by one simultaneously and a similar decrement button. These should work even if the base and height are not the same length