Complete Chapter 12 Lab Assignment 12.12 and Chapter 13 Lab Assignment 13.9. The Convert.java and Triangles.java classes are provided. You will need to complete the ConvertFrame.java and TrianglesPanel.java classes.

// Exercise 12.12 : Convert.java

//Temperature-conversion program

import javax.swing.JFrame;

public class Convert{

public static void main(String[] args) {

ConvertFrame convertFrame = new ConvertFrame();

convertFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

convertFrame.setSize(225, 90); // set frame size

convertFrame.setVisible(true); // display frame

}

} // end class Convert

// Exercise 12.12 : ConvertFrame.java

// Temperature-conversion program

import java.awt.BorderLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JTextField;

public class ConvertFrame extends JFrame {

private JLabel prompt;

// label to prompt user to enter Fahrenheit

// label to display temperature in Celsius

// textfield to enter temperature

// constructor sets up GUI

public ConvertFrame() {

//prompt to enter Fahrenheit temperature

// textfield for Fahrenheit

// register anonymous action listener

//get temperature, be user to parse value and convert to an integer

//calculate the celsius

//display celsius //set border layouts

} // end ConvertFrame constructor

} // end class ConvertFrame

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// Exercise 13.9 : Triangles.java

// Displays randomly generated triangles in different colors.

import javax.swing.JFrame; public class Triangles{

public static void main(String args[]) {

// create frame for TrianglesJPanel

JFrame frame = new JFrame("Drawing Triangles");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

TrianglesJPanel trianglesJPanel = new TrianglesJPanel();

frame.add(trianglesJPanel); // add trianglesJPanel to frame

frame.setSize(400, 400); // set frame size

frame.setVisible(true); // display frame

}

} // end class Triangles

// Exercise 13.9: TrianglesJPanel.java

// Displays randomly generated triangles in different colors.

import java.awt.Color;

import java.awt.geom.GeneralPath;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.util.Random;

import javax.swing.JPanel;

public class TrianglesJPanel extends JPanel{

// random-number generator

// constructor sets background

public TrianglesJPanel() {

// set JPanel background color

} // draw ten triangles

public void paintComponent(Graphics g) {

super.paintComponent(g);

// cast graphics object // create a triangle from three random points

// create the object which will be the triangle

// min distance between triangle and top/left

// size of area triangle appears in // use method moveTo to start the triangle // draw a line to the second point // draw a line to the third point // draw a line back to the initial point // choose a random color // color the interior of the triangle

}

}

} // end class TrianglesJPanel