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 are: 5 * -BLUE: paint a blue dot 6 * - RED: paint a red dot 7 * -GREEN: paint a green dot 8 * -YELLOW: yellow 9 * -RANDOM: have a random color come out 10 * -HELP: show a list of the commands in a dialog message box 11 * -EXIT: terminate the program 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 Interpreter3 { 22 private void interpreter(){ 23 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 ) {command = "exit"; } //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("random") ) { 46 miro.setColor(randomColor()); 47 miro.paint(dot); 48 } else if ( command.equalsIgnoreCase("help") ) { 49 JOptionPane.showMessageDialog(null, "Valid commands are:" + "RED | BLUE | GREEN | YELLOW | RANDOM | 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:" + command.toUpperCase()); 56 } 57 } 58 } 59 60 private Color randomColor() { 61 int rv = (int) (Math.random()*256); 62 int gv = (int) (Math.random()*256); 63 int bv = (int) (Math.random()*256); 64 return new Color(rv,gv,bv); 65 } 66 67 // INFRASRTUCTURE FOR SOME SIMPLE PAINTING 68 69 public Interpreter3() { 70 interpreter(); 71 } 72 73 public static void main(String[] args) { 74 SwingUtilities.invokeLater(new Runnable() { 75 public void run() { 76 new Interpreter3(); 77 } 78 }); 79 } 80 } 81 82