Hi, Tahnks for reply.
So there is not way to turn off this 'polite information'? Since we have a assert keyword in our java 1.3 code and this generates plenty of annoying warnings. //Mikael -----Original Message----- From: James Abley [mailto:[EMAIL PROTECTED] Sent: den 18 mars 2005 08:44 To: Ant Users List Subject: RE: set jvm to 1.3 On Fri, 2005-03-18 at 07:20, Mikael Petterson (KI/EAB) wrote: > Hi, > > I have set javac's source attribute to 1.3 but when I compile the code I > get, > > ".. warning: as of release 1.4, assert is a keyword..." > > I start ant with 1.4.2 so I guess that is the default for compiling code to. http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/javac.html Default for compiling is 1.3 unless specified. > As I understand it the javac command with option '-source 1.3' would make the > 1.4 compiler to compile for 1.3?! Correct - no 1.4 only features will work. > > This is what I use in my build.xml > > <javac debug="true" deprecation="true" destdir="${classes.dir}" > srcdir="${src.dir}" source="${BUILD.COMPILER}"> > > Any ideas why? > I'm guessing that the warning is a polite way of letting you know that your code might need some changes when ported to 1.4, for instance, if you use your own assertion mechanism with a method named assert rather than 1.4 assertions; e.g. using 1.4.2 SDK, public class HelloWorld { public static void main(String [] args) { assert(true); System.out.println("Boo"); } private static void assert(boolean test) { System.out.println(test); } } will compile with two warning using `javac HelloWorld.java`, or equivalent javac task, but will fail with an error using `javac -source 1.4 HelloWorld.java`. HTH James > //Mikael > > -----Original Message----- > From: Ivan Ivanov [mailto:[EMAIL PROTECTED] > Sent: den 17 mars 2005 15:31 > To: Ant Users List > Subject: RE: set jvm to 1.3 > > > AFAIK, target means to what version of class format > must the compiled classes conform to; compiler means > what compiler exactly should be used for compilation > (i.e. to produce these classes). > > HTH Ivan > > --- "Mikael Petterson (KI/EAB)" > <[EMAIL PROTECTED]> wrote: > > Hi again, > > > > So what is the difference of > > > > javac attributes "target" and "compiler". > > If I want to make sure that my code is compilable > > for 1.3? > > I am getting somewhat confused. > > > > //Mikael > > -----Original Message----- > > From: Ivan Ivanov > > [mailto:[EMAIL PROTECTED] > > Sent: den 17 mars 2005 14:53 > > To: Ant Users List > > Subject: RE: set jvm to 1.3 > > > > > > > > --- "Mikael Petterson (KI/EAB)" > > <[EMAIL PROTECTED]> wrote: > > > Thanks for the hint! > > > > > > In ant there is a property called: > > > > > > ant.java.version > > It is the java version ant is started with. > > > > > > > > What does that tell us? Does it say anything about > > > the version of compiler used? > > I suppose it does not say, because you can start Ant > > with one jvm, but compile your sources with another > > java compiler, say jikes, gcj, etc. > > > > HTH Ivan > > > > > Or is it the jvm that ant was started with? > > > > > > //Mikael > > > > > > -----Original Message----- > > > From: Ivan Ivanov > > > [mailto:[EMAIL PROTECTED] > > > Sent: den 17 mars 2005 13:49 > > > To: Ant Users List > > > Subject: Re: set jvm to 1.3 > > > > > > > > > See target attribute of <javac> task. You can do > > it > > > like this: > > > > > > <javac target="${javac.target}" ...>, > > > define javac.target properties in your > > > build.properties as > > > javac.target=1.3 > > > > > > HTH Ivan > > > > > > > > > --- "Mikael Petterson (KI/EAB)" > > > <[EMAIL PROTECTED]> wrote: > > > > Hi, > > > > > > > > I am starting ant 1.6.1 with jdk1.4.2 but I need > > > to > > > > compile my code with 1.3. > > > > How can I set this in my build.properties and > > then > > > > use in my javac task? > > > > > > > > Any hints? > > > > > > > > //Mikael > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > > To unsubscribe, e-mail: > > > > [EMAIL PROTECTED] > > > > For additional commands, e-mail: > > > > [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > > > > __________________________________ > > > Do you Yahoo!? > > > Yahoo! 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