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The java library I need (jpcap) only works on Java 6, it won't work with Java 7. Is it still possible to install Java 6 on Ubuntu? According to the Ubuntu Help:

Oracle (Sun) Java 6 is no longer available to be distributed by Ubuntu, because of license issues

I've tried to use the instructions on the same site but they don't seem to work... ./jre-6u34-linux-i586.bin doesn't seem to do anything!

Jacob Schoen
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Shane
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2 Answers2

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I would try the OpenJDK 6 which AFAIK is fine on Ubuntu and check you have the right version 32-bit vs 64-bit for your machine. i586 is 32-bit and won't work with a 64-bit build of jpcap.

Peter Lawrey
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  • Does jpcap work with OpenJDK? There is a few different versions of jpcap, just to clarify I'm working with the one that used to be at netresearch.ics.uci.edu/kfujii/Jpcap/, until it went down,,, I have a 32-bit build of this jpcap so i would need a 32-bit OpenJDK 6 yes? – Shane Dec 05 '12 at 17:05
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    I'll try this so and if it doesn't work I'll try the jNetPcap - thanks – Shane Dec 05 '12 at 17:28
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Check out these instructions on how to install Sun JDK 6. In older versions of the repositories the desired package is included.

If you're not obliged to, try using jNetPcap instead. It's another wrapper around pcap, it just works on more recent JVMs and is not restricted to 32 bit architecture.

f4lco
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  • Does jNetCap allow you to look at the packet data/payload? It's a part of the project I'm running – Shane Dec 05 '12 at 17:10
  • Another advantage is a better documentation of jNetPcap. Look at: [Chapter 3](http://jnetpcap.com/userguide/ch3): Packet decoding – 3.3 - Working with protocol headers – 3.4 - Formatting packets for text output – f4lco Dec 05 '12 at 17:14
  • Just added jnetcap to my project there - very simple and easy, hopefully it works with my previous GUI code, thanks a lot! – Shane Dec 05 '12 at 18:16