Confused by Java information

[hnmcc]

I'm running 10.04 LTS with these Java packages installed:

• sun-java6-bin
• sun-java6-jre
• java-common
• sun-java6-plug

I can't get some software to run: it says it needs JRE6. But when I look into it, the terminal shows this:

java -version
java version "1.5.0"
gij (GNU libgcj) version 4.4.3

My Java knowledge is now exhausted.

What do I need to do to get JRE6 running?

[nmset]

You have JAVA 1.5 installed somewhere and is in the 'path', you can locate the java 1.5 executable by running

which java

You have to find out where JAVA 1.6 is installed. I don't know Ubuntu, so I don't know where packages are installed. Your package manager will inform you about it.

Alternatively, you can look for JAVA 1.6 in a 'brute find' way :

find / -type f -name "java"

This will give you, amongst many outputs,

/<path_to_java_1.6>/bin/java

.
If you are running your client program from a shell, just adjust the PATH variable :

export PATH="/<path_to_java_1.6>/bin:$PATH"
/<path_to_your_program>your_program

If you want to havt the path variable to always point to JAVA 1.6, Ubuntu knowledgeable forum members will tell you which file to tweak for this purpose.
On Mandriva, it's /etc/profile, where we can add

export PATH="/<path_to_java_1.6>/bin:$PATH"

You'll have to reboot after this.

[coopstah13]

None of this is necessary due to the use of alternatives.

What you need is to run update alternatives command. Just google for update alternatives java ubuntu and ubuntu doc should be high on the list

[coopstah13]

https://help.ubuntu.com/community/Java

[hnmcc]

Thanks for your help, guys. I'm getting there (slowly).

[coopstah13]

which error, that which command output is showing gcj?

[GregBrannon]

which error, that which command output is showing gcj?

(Lengthening ). . . Huh?

[coopstah13]

i'm asking op if the error to which they are referring is that of the which command output as posted above