Java Applets

• Java applets are classes written in Java which are intended not to run as stand-alone programs (as applications do) but as subprograms of a browser which is already managing a window.

• Applets should NOT have a main method but rather init, start, paint etc. for displaying on the browser window

• Applets are not trusted as a default, so they have several restrictions on running on the client machine

  • no printing or file I/O
  • cannot connect through the network to any machine but its own server
  • any new windows created by the applet have a warning label

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