What's wrong with this command?
Nothing in Java is easy except for the actual programming. I swear this is so complicated. I just want my single applet to work on a machine with java re 1.4. I type in this command to get the job done:
javac -target 1.4 -bootclasspath"C:\j2sdk1.4.2_15\lib" -extdirs"" Counter.java
which is an identical copy of Java's example found here: http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/javac.html
but I keep getting this error:
javac: target release 1.4 conflicts withdefault source release 1.5
Which doesn't make sense because I am using 1.6u2
What did I do wrong?
Why don't they have a program that does this ancient command line grunt work for you?
[795 byte] By [
Galm_1a] at [2007-11-27 10:32:26]
Set the source flag, too, if you're compiling to 1.4.
"-source 1.4"
Alternately, you can set the bootclasspath and extdir flags. See the documentation here:
http://java.sun.com/javase/6/docs/technotes/tools/windows/javac.html
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Well that may have worked but:
Fatal Error: Unable to find package java.lang in classpath or bootclasspath
I typed the right directory where I just installed 1.4. Where would java.lang be located in it?
> -bootclasspath "C:\j2sdk1.4.2_15\lib"
You need to specify the full path to the rt.jar. Example:
-bootclasspath c:/j2sdk1.4.2_15/lib/rt.jar
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> I dont think anyone programms via the command line anymore.
Knowing how to use command-line tools will greatly enhance the OP's knowledge of how to troubleshoot issues like this, including problems like this that turn up when using IDEs.
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> I don't have an rt.jar in the lib folder. I only
> have tools.jar, dt.jar, and htmlconverter.jar. None
> of which work.
Sorry -> "c:/j2sdk1.4.2_15/jre/lib/rt.jar" "RT" stands for "real-time", and it contains the java.lang.* classes you'll need.
You could have searched for rt.jar under the 1.4 directory, you know... ;o)
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> I thought jre was runtime and was only used when
> running programs...
It is, but those are the bootstrap classes you'll need to compile against when you want to run your application on that version.
> ...but hey what do I know. Thank you yawmark!
You're very welcome; glad you got it working, and I'm sorry again for any frustration caused by the incorrect file path I posted earlier.
Cheers!
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