1 2 /* 3 * This interpreter is intended to paint different colored dots in a window. 4 * 5 * The commands that the interpreter can recognize and respond to are: 6 * - BLUE: paint a blue dot 7 * - RED: paint a red dot 8 * - GREEN: paint a green dot 9 * - YELLOW: paint a yellow dot 10 * - HELP: show a list of the commands in a dialog message box 11 * - EXIT: terminate the program 12 */ 13 14 package interpreters; 15 16 import java.awt.Color; 17 import javax.swing.JOptionPane; 18 import javax.swing.SwingUtilities; 19 20 import painter.SPainter; 21 import shapes.SCircle; 22 23 public class Interpreter2 { 24 25 private void interpreter() { 26 27 // CREATE OBJECTS TO THINK WITH 28 SPainter miro = new SPainter("Dot Thing" ,400,400); 29 miro.setScreenLocation(0,0); 30 SCircle dot = new SCircle(180); 31 32 //REPEATEDLY TAKE A COMMAND FROM AN INPUT DIALOG BOX AND INTERPRET IT 33 while (true) { 34 String command = JOptionPane.showInputDialog(null,"Command?"); 35 if (command == null) { command = "exit"; } // user clicked on Cancel 36 if (command.equalsIgnoreCase("blue") ) { 37 miro.setColor(Color.BLUE); 38 miro.paint(dot); 39 } else if ( command.equalsIgnoreCase("red") ) { 40 miro.setColor(Color.RED); 41 miro.paint(dot); 42 } else if ( command.equalsIgnoreCase("green") ) { 43 miro.setColor(Color.GREEN); 44 miro.paint(dot); 45 } else if ( command.equalsIgnoreCase("yellow") ) { 46 miro.setColor(Color.YELLOW); 47 miro.paint(dot); 48 } else if ( command.equalsIgnoreCase("help") ) { 49 JOptionPane.showMessageDialog(null, "Valid commands are: " 50 + "RED | BLUE | GREEN | YELLOW | HELP | EXIT "); 51 } else if ( command.equalsIgnoreCase("exit") ) { 52 miro.end(); 53 System.out.println("Thank you for viewing the dots ..."); 54 break; 55 } else { 56 JOptionPane.showMessageDialog(null, "Unrecognizable command: " 57 + command.toUpperCase()); 58 } 59 } 60 61 } 62 63 // INFRASTRUCTURE FOR SOME SIMPLE PAINTING 64 65 public Interpreter2() { 66 interpreter(); 67 } 68 69 public static void main(String[] args) { 70 SwingUtilities.invokeLater(new Runnable() { 71 public void run() { 72 new Interpreter2(); 73 } 74 }); 75 } 76 77 } 78 79 80