Javac: invalid target ?? help me pls?

Question

hi.
first time, i have not encounter any problem about my ide ( netbeans 5.5 ) . but this time i need to build my old project i encounter a problem :
it is :
============
javac: invalid target release: 1.6
Usage: javac <options> <source files>
where possible options include:
-g Generate all debugging info
-g:none Generate no debugging info
-g:{lines,vars,source} Generate only some debugging info
-nowarn Generate no warnings
-verbose Output messages about what the compiler is doing
-deprecation Output source locations where deprecated APIs are used
-classpath <path> Specify where to find user class files
-cp <path> Specify where to find user class files
-sourcepath <path> Specify where to find input source files
-bootclasspath <path> Override location of bootstrap class files
-extdirs <dirs> Override location of installed extensions
-endorseddirs <dirs> Override location of endorsed standards path
-d <directory> Specify where to place generated class files
-encoding <encoding> Specify character encoding used by source files
-source <release> Provide source compatibility with specified release
-target <release> Generate class files for specific VM version
-version Version information
-help Print a synopsis of standard options
-X Print a synopsis of nonstandard options
-J<flag> Pass <flag> directly to the runtime system
BUILD FAILED (total time: 0 seconds)
==================
what can i do? please help me .. thanx

Answer 1

Go to the project properties. ( right lick =>
properties )
then select "sources" on left side & now on the right
pane BOTTOM you'll see something like "source level"
with a drop down menu.
Select the version you're using right now from the
drop down menu.
Hope this will help.
Cheers :)
AlienX
p.s - U can find the java version you're running by
entering "javac -version" in the cmd prompt.This is the problem I have. Souce level in Project's properties is 1.4, error says about 1.6. If I override it as a compiler option it works. If I reset it as I have described previously it works.
Boris