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 package interpreters; 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 Interpreter2 { 20 21 private void interpreter() { 22 // CREATE OBJECTS TO THINK WITH 23 SPainter miro = new SPainter("Dot Thing", 400, 400); 24 miro.setScreenLocation(0,0); 25 SCircle dot = new SCircle(180); 26 27 // REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT 28 while ( true ) { 29 String command = JOptionPane.showInputDialog(null, "Command?"); 30 if (command == null) { 31 command = "exit"; 32 } // user clicked on Cancel 33 if (command.equalsIgnoreCase("blue")) { 34 miro.setColor(Color.BLUE); 35 miro.paint(dot); 36 } else if (command.equalsIgnoreCase("red")) { 37 miro.setColor(Color.RED); 38 miro.paint(dot); 39 } else if (command.equalsIgnoreCase("green")) { 40 miro.setColor(Color.GREEN); 41 miro.paint(dot); 42 } else if (command.equalsIgnoreCase("yellow")) { 43 miro.setColor(Color.YELLOW); 44 miro.paint(dot); 45 } else if (command.equalsIgnoreCase("help")) { 46 JOptionPane.showMessageDialog(null, "Valid commands are: " 47 + "RED | BLUE | GREEN | YELLOW | HELP | EXIT"); 48 } else if (command.equalsIgnoreCase("exit")) { 49 miro.end(); 50 System.out.println("Thank you for viewing the dots..."); 51 break; 52 } else { 53 JOptionPane.showMessageDialog(null, "Unrecognizable command: " 54 + command.toUpperCase()); 55 } 56 } 57 } 58 // INFRASTRUCTURE FOR SOME SIMPLE PAINTING 59 public Interpreter2() { 60 interpreter(); 61 } 62 public static void main(String[] args) { 63 SwingUtilities.invokeLater(new Runnable() { 64 public void run() { 65 new Interpreter2(); 66 } 67 }); 68 } 69 } 70