On Wednesday 17 March 2004 02:35 am, Mark Eggers <mdeggers@xxxxxxxxxxxxx> wrote: > > Kaustubh Ghosh wrote: > > > > I am quite novice towards java programming in linux.To start with I > > installed j2re1.4.2_03 and also j2sdk1.4.2_04 in FC1(Both from > > java.sin.com).Now peculiar problems arise. > > When I type "java -version" it gives 1.3.1( > > When I type "/usr/java/j2sdk1.4.2_04/bin/java -version" it gives > > 1.4.2_04. Anyway I can compile any .java file with javac. > > But when I try to run it with java(any of the above) the gui would not > > come.(Hello World executes perfectly with System.out.println as also > > other non-gui programs). > > You have both Sun's Java and GNU's Java installed. GNU's Java comes by > default when you select all of the compilers during the install. > > What I did was to find all the matching files in /usr that were supplied > by Sun's J2SDK and moved them to a /usr/<directory>/orig. I then added > my $JAVA_HOME/bin and $JAVA_HOME/jre/javaws to my PATH variable. javaws > is where Java WebStart is located. > > Like you, I have multiple Java versions installed. I usually keep the > current release and the previous release around in case something breaks > in the current release that didn't break in the previous release. > > To do this I make a symbolic link from where I installed Java to > /usr/java. > > For example, if I have j2sdk1.4.2_02 and j2sdk1.4.2_04 installed in > /usr, I will link /usr/j2sdk1.4.2_04 to /usr/java. > > I then set JAVA_HOME to /usr/java. > > This arrangement seems to work reasonably well. Another approach would > be to not make the link to /usr/java and just set the JAVA_HOME > environment variable appropriately. > > However, in both cases you'll need to take the GNU commands out of your > path and make sure that you have the Sun-supplied versions in your path. > > HTH > /mde/ > Well,I think that is exactly my case.But being quite a novice I cannot do all you said(like setting JAVA_HOME).Can you just give me the commands to be used step by step.It would help me immensely.Thanks.
