HELP! * GREY=local LOCAL HTML version of Foils prepared July 10 1996

Foil 179 Table for Java file and network access

From Basic Lectures on Java Language Applets Graphics Networking Trip to China and Icase Tutorial -- July 12-28 and June 10-13 96. by Geoffrey C. Fox * Critical Information in IMAGE
This table shows what Java programs can do in the following four cases:
  • NL - Netscape loading a URL for applet
  • NF - Netscape loading a local file for applet
  • AV - Applet viewer
JA - Java application (not an applet)
    • NL NF AV JA
read local file no no yes yes
write local file no no yes yes
get file information no no yes yes
delete file no no no yes
run another program no no yes yes
read the user.name proper no yes yes yes
connect to network port on server yes yes yes yes
connect to network port on other host no yes yes yes
load Java library no yes yes yes
call exit no no yes yes
create a pop-up window with warning yes yes yes

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