Java Solve Java 1.5 Installation Issue on Ubuntu Linux

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To set Java 1.5 as the default version on Ubuntu Linux, the user initially encounters an issue where the command line defaults to Java 1.4. After updating the PATH variable with "export PATH="/usr/lib/jdk1.5.0_06/bin/:$PATH"", the user successfully switches to Java 1.5, but the change is not permanent upon reopening the terminal. To make the change permanent, it is suggested to add the export line to the .bash_profile file. The discussion also raises questions about the necessity of having two versions of Java installed and the possibility of uninstalling Java 1.4, although the focus remains on configuring the environment for Java 1.5.
Tony11235
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I'm on ubuntu linux. I've installed java 1.5 but at the command line, when I type java -verion I get 1.4. So then I type: export PATH="/usr/lib/jdk1.5.0_06/bin/:$PATH". I type java -version and get 1.5, but then when i close the command prompt and open a new one, it's back to java 1.4. Any help on what i need to do to make it permanent?
 
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Do you need two versions of java installed? Why don't you uninstall java 1.4?

If you want both versions you can put that export line in your .bash_profile
 

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