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 * -HELP: show a list of the commands in a dialog message box 8 * -EXIT: terminate the program 9 */ 10 11 package interpreters; 12 13 import java.awt.Color; 14 import javax.swing.JOptionPane; 15 import javax.swing.SwingUtilities; 16 import painter.SPainter; 17 import shapes.SCircle; 18 19 public class Interpreter1 { 20 21 private void interpreter() { 22 23 //CREATE OBJECTS TO THINK WITH 24 SPainter miro = new SPainter("Dot Thing", 400, 400); 25 miro.setScreenLocation(0, 0); 26 SCircle dot = new SCircle(180); 27 28 //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT 29 while (true) { 30 String command = JOptionPane.showInputDialog(null,"command?"); 31 if (command == null) {command = "exit";} // user clicked on Cancel 32 if (command.equalsIgnoreCase("blue")){ 33 miro.setColor(Color.BLUE); 34 miro.paint(dot); 35 }else if (command.equalsIgnoreCase("red")) { 36 miro.setColor(Color.RED); 37 miro.paint(dot); 38 }else if (command.equalsIgnoreCase("help")) { 39 JOptionPane.showMessageDialog(null, "Valid commands are: " 40 + "RED | BLUE | HELP | EXIT "); 41 }else if (command.equalsIgnoreCase("exit")) { 42 miro.end(); 43 System.out.println("Thank you for viewing the dots ... "); 44 break; 45 }else { 46 JOptionPane.showMessageDialog(null, "Unrecognizable command: " 47 + command.toUpperCase()); 48 } 49 } 50 } 51 52 //INFRASTRUCTURE FOR SOME SIMPLE PAINTING 53 54 public Interpreter1() { 55 interpreter(); 56 } 57 58 public static void main(String[] args) { 59 SwingUtilities.invokeLater(new Runnable() { 60 public void run() { 61 new Interpreter1(); 62 63 } 64 }); 65 } 66 } 67