Basic HTML version of Foils prepared July 6 99

Foil 41 Basic components

From Use of Java Language in Computational Science DoD Modernization Users Group Conference Monterey -- June 7 99. by Nancy McCracken, Geoffrey C. Fox
For each basic component, one can create one or more instances of the component type and then use one of the "add" methods to place it into a Container such as an applet window.
  • Button button1 = new Button("Click here");
  • add (button1);
  • TextField tf = new TextField(Iinitial text", 30);
  • add(tf);
For each basic component, additional methods allow access to the properties of the components:
  • button1.setBackground (Color.cyan);
  • text which is displayed can be changed:
  • tf.setText("now show a new text");
  • If the user types input into the text field, it can be obtained:
  • stringvar = tf.getText();
Click here
Initial text

© Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

If you have any comments about this server, send e-mail to webmaster@npac.syr.edu.

Page produced by wwwfoil on Tue Jul 6 1999