1 /* 2 *This interpreter is intended to paint different colored dots in a window. 3 * 4 * The commands that the interpreter can recognize and respond to are: 5 * - BLUE: paint a blue dot 6 * - RED: paint a red dot 7 * - GREEN: paint a green dot 8 * YELLOW: paint a yellow dot 9 * - HELP: show a list of the commands in a dialog message box 10 * - EXIT: terminate the program 11 */ 12 13 package interpreters; 14 15 import java.awt.Color; 16 import javax.swing.JOptionPane; 17 import javax.swing.SwingUtilities; 18 import painter.SPainter; 19 import shapes.SCircle; 20 21 public class Interpreter2 { 22 23 private void interpreter() { 24 // CREATE OBJECTS TO THINK WITH 25 SPainter miro = new SPainter("Dot Thing", 400, 400); 26 miro.setScreenLocation(0, 0); 27 SCircle dot = new SCircle(180); 28 29 // REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT 30 while (true) { 31 String command = JOptionPane.showInputDialog(null, "Command?"); 32 if (command == null) { 33 command = "exit"; 34 } // user clicked on Cancel 35 if (command.equalsIgnoreCase("blue")) { 36 miro.setColor(Color.BLUE); 37 miro.paint(dot); 38 } else if (command.equalsIgnoreCase("red")) { 39 miro.setColor(Color.RED); 40 miro.paint(dot); 41 } else if (command.equalsIgnoreCase("green")) { 42 miro.setColor(Color.GREEN); 43 miro.paint(dot); 44 } else if (command.equalsIgnoreCase( "yellow")) { 45 miro.setColor(Color.YELLOW); 46 miro.paint(dot); 47 } else if (command.equalsIgnoreCase("help")) { 48 JOptionPane.showMessageDialog(null, "Valid commands are: " 49 + "RED | BLUE | GREEN| YELLOW| HELP | EXIT "); 50 } else if (command.equalsIgnoreCase("exit")) { 51 miro.end(); 52 System.out.println("Thank you for viewing the dots..."); 53 break; 54 } else { 55 JOptionPane.showMessageDialog(null, "Unrecognizable command: " 56 + command.toUpperCase()); 57 } 58 } 59 } 60 // INFRASTRUCTURE FOR SOME SIMPLE PAINTING 61 62 public Interpreter2() { 63 interpreter(); 64 } 65 66 public static void main(String[] args) { 67 SwingUtilities.invokeLater(new Runnable() { 68 public void run() { 69 new Interpreter2(); 70 } 71 }); 72 } 73 }