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I need to use java web start to run TopCoders ContestAppletProd.jnlp. When I try to run the the arena I get Java not found error.

enter image description here

Upon selecting the option "using Java Web Start" the jnlp file opens up in firefox showing a download dialog which keeps on recurring.

enter image description here

The commands java and javac pretty much work on my system but javaws shows some package is required which on installation command says its already installed.

enter image description here

Has anybody come across this problem? any suggestions to solve are appreciated.

Salem
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Vihaan Verma
  • 231
  • How did you install java? And what version did you install? – Eric Carvalho May 09 '13 at 16:28
  • What about /usr/lib/jvm/java-7-openjdk-amd64/bin/javaws (replace the version(6/7) and architecture(amd64/x86) by your own if they do not match) – Salem May 09 '13 at 16:28
  • with openjdk-7-jre and openjdk-7-jdk installed, javaws is not present, only java compilers and such. – Kevin Jan 17 '17 at 19:57

3 Answers3

6

Installed java-8-openjdk-amd64:

sudo apt-get install default-jre

And I had the same problem.

Install oracle-java solution for me:

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer

javaws -version
Java(TM) Web Start 11.45.2.14-fcs
...

Select the desired platform for Java, you can:

sudo update-alternatives --config java
khatchad
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aropan
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0

The oracle's package worked for me also.

milen@milen-Lenovo-B50-80:~$ 
milen@milen-Lenovo-B50-80:~$ 
milen@milen-Lenovo-B50-80:~$ sudo update-alternatives --config java
There are 2 choices for the alternative java (providing /usr/bin/java). 
Selection    Path  Priority   Status
------------------------------------------------------------
0            /usr/lib/jvm/java-9-oracle/bin/java              1091      auto mode
* 1            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode
2            /usr/lib/jvm/java-9-oracle/bin/java              1091      manual mode

Press <enter> to keep the current choice[*], or type selection number: 
milen@milen-Lenovo-B50-80:~$ 
milen@milen-Lenovo-B50-80:~$ 
milen@milen-Lenovo-B50-80:~$ 
milen@milen-Lenovo-B50-80:~$ 
milen@milen-Lenovo-B50-80:~$ sudo find / -name "javaws"
/usr/bin/javaws
/usr/share/bash-completion/completions/javaws
/usr/lib/jvm/java-9-oracle/bin/javaws
/var/lib/dpkg/alternatives/javaws
/etc/alternatives/javaws

/usr/bin/javaws -> (i.e. points-to) /etc/alternatives/javaws*

I pointed jnlp to /usr/bin/javaws in Firefox's settings.

There was no javaws before the oracle installer:

milen@milen-Lenovo-B50-80:~$ 
milen@milen-Lenovo-B50-80:~$ sudo find / -name "*javaws*"
/usr/share/app-install/desktop/icedtea-netx-common:icedtea-netx-javaws.desktop
/usr/share/app-install/icons/javaws.png
/usr/share/bash-completion/completions/javaws
/var/lib/app-info/icons/ubuntu-xenial-universe/64x64/icedtea-netx-common_javaws.png
find: ‘/run/user/1000/gvfs’: Permission denied
milen@milen-Lenovo-B50-80:~$ 
milen@milen-Lenovo-B50-80:~$
Milen Georgiev
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0

You can install icedtea to add web start, instead of switching to Oracle.

On Debian 10: apt install icedtea-netx

Roger Dueck
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  • 6