Geographic information system - Software Development Case Studies in Java - page 424

public void mapItem_actionPerformed(ActionEvent e) {
String mapName # e.getActionCommand();
// loads the image file and map file
URL mapUrl # null ;
URL imageUrl # null ;
try {
mapUrl # new URL(this.getCodeBase(), mapName ! ".map");
String imageFile # mapWindow.openMap(
mapUrl.openStream());
StringTokenizer tokenizer #
new StringTokenizer(imageFile, "\\");
String fname # "";
while (tokenizer.hasMoreElements())
fname # tokenizer.nextToken();
imageUrl # new URL(this.getCodeBase(), fname);
Image image # ( new ImageIcon(imageUrl)).getImage();
mapWindow.setImage(image);
} catch (Exception ex) { return ; }
// loads the list of layers for the selected map
String layerList[] # mapWindow.getLayerList();
. . .
}
// invoked by the Web browser to kill the Applet
public void destroy() {
output.println("Bye.");
}
// this method is invoked by the mouse handler when a
// geometric entity is selected
public void setDataRecords(String dbInfo[], String key) {
dataWindow.resetRecords();
output.println("GETRECORD");
output.println(dbInfo[0]);
output.println(dbInfo[1]);
output.println(dbInfo[2]);
output.println(key);
output.flush();
// shows the record values in the data window
try {
int size # Integer.parseInt(this.input.readLine());
for ( int i # 0; i < size; i !! ) {
StringTokenizer tokenizer #
new StringTokenizer(input.readLine(), " ");
String attribute # tokenizer.nextToken();
String value # tokenizer.nextToken();
dataWindow.addRecord(attribute, value);
}
}