Developing applets in Java

• Go to the public_html directory (cd public_html).
• Create and go into a directory where you will be doing the current java work (e.g. cd Lab1).
• Use emacs to create the HTML file and the java file. E.g.
  
  emacs lab1.html
  emacs myApplet.java
  
  
• Compile with the JDK compiler, javac. E.g.
  
  javac myApplet.java
  
  The resulting file will be a class file, e.g. myApplet.class.
• Make sure the permissions on the html and class files are OK (i.e. everybody can read these files). Use
  
  ls -l *.html *.class
  
  to see these permissions. If they are not OK, change them with chmod. E.g.
  
  chmod a+r myApplet.class
  
  or
  
  chmod go+r myApplet.class
  
  
• To view the applet, launch a web browser. Go to the html page you have created. E.g.
  
  http://cs.smith.edu/~112a-aa/Lab1/lab1.html
  
  
• If you get an error, look into the Java console for more details.
• To make corrections, go back to the terminal window. Edit and compile again your java file.
  CAREFUL: if you go back to the web browser and reload the page, the applet may not be reloaded and you will see the old version of your applet (before corrections). You may have to close the browser and launch it again. To simplify this process, set it to always go to the last visited page, from the Preferences menu.

Developing applications in Java

• You do not need a web browser.
• Compile the application - as before - with the javac compiler.
  
  javac myApplic.java
  
  
• Run it with java myApplic
  
  java myApplic