Trying the prototype
maurizio.cimadamore at oracle.com
Fri Aug 6 12:54:29 PDT 2010
On 06/08/2010 20:36, Collin Fagan wrote:
>> Brian Goetz
>> There is, however, tremendous value in you actually *trying* the
>> Have you done that?
> I sir have not and would very much like to. Should I just get the latest
> openjdk build (103?) or does Project Lambda have it's own branch? Is there a
> page that walks me through compiling from source?
thanks for your interest in project lambda. The easiest way to try the
prototype is to have a JDK binary snapshot available (b103 or greater);
you then need to do the following:
1) clone the 'langtools' repository of the lambda branch:
hg clone http://hg.openjdk.java.net/lambda/lambda/langtools
[this will create a new 'langtools' folder in your current folder]
2) build the compiler
ant -Dboot.java.home=<PATH_TO_JDK6> -Dtarget.java.home=<PATH_TO_JDK7>
This should compile all tools (javac/javap/javah/javadoc/apt) and should
result in a new folder called 'dist' under the 'langtools' folder.
Inside 'dist' there is a subfolder named 'bin' - inside, you will find
the executables for java/javac that should allow you to compile and
execute code containing lambda expressions.
[If you like NetBeans, there's a NB project under langtools/make - the
project name is 'langtools' - once the project has been opened in the
IDE, you can simply build everything by pressing F-11, or by selecting
'Build' from the project contexual menu... however ant options
(-Dboot.java.home and -Dtarget.java.home) still need to be specified
manually --- this can be done by accessing the menu under
Tools->Options->Misc->Ant and by inserting the appropriate value in the
text field at the bottom of the tab].
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