1 /* 2 * This interpeter 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 25 //CREATE OBJECTS TO THINK WITH 26 SPainter miro = new SPainter("Dot Thing", 400,400); 27 miro.setScreenLocation(0,0); 28 SCircle dot = new SCircle(180); 29 30 // REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT 31 while ( true ) { 32 String command = JOptionPane.showInputDialog(null, "Command"); 33 if ( command == null ) { command = "exit"; } //user clicked on Cancel 34 if ( command.equalsIgnoreCase("blue") ) { 35 miro.setColor(Color.BLUE); 36 miro.paint(dot); 37 } else if (command.equalsIgnoreCase("green")) { 38 miro.setColor(Color.GREEN); 39 miro.paint(dot); 40 } else if (command.equalsIgnoreCase("yellow")) { 41 miro.setColor(Color.YELLOW); 42 miro.paint(dot); 43 } else if (command.equalsIgnoreCase("red")) { 44 miro.setColor(Color.RED); 45 miro.paint(dot); 46 } else if ( command.equalsIgnoreCase("help")) { 47 JOptionPane.showMessageDialog(null,"Valid commands are : " + "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, "Unrecognizeable command: " + command.toUpperCase()); 54 } 55 } 56 } 57 58 // INFRASTRUCTURE FOR SOME SIMPLE PAINTING 59 60 public Interpreter2() { 61 interpreter(); 62 } 63 64 public static void main(String[] args) { 65 SwingUtilities.invokeLater(new Runnable() { 66 public void run() { 67 new Interpreter2(); 68 } 69 }); 70 } 71 }