AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Problem Creating instances in Java          AppletTalk.com Forum Index -> Java Help View previous topic :: View next topic   Author Message Guest Posted: Thu Feb 23, 2006 2:12 am    Post subject: Problem Creating instances in Java Hi guys can anyone help im at my wits end with this. i have many java programs on my computer that i have done in the past and they all have worked fine. But!!! now i have a problem creating instances of other classes for example: Convert con = new Convert(); does not work. it says Cannot identify symbol Convert. But i know for a fact the class Convert is compiled and also is in same directory. Every time i try and compile a program it does not like any instance methods. (with all java files on my computer); Many thanks Andrew Back to top Hal Rosser Guest Posted: Thu Feb 23, 2006 3:12 am    Post subject: Re: Problem Creating instances in Java <carlito (AT) whitmore (DOT) fsnet.co.uk> wrote in message news:1140658929.449640.32150 (AT) f14g2000cwb (DOT) googlegroups.com... Quote: Hi guys can anyone help im at my wits end with this. i have many java programs on my computer that i have done in the past and they all have worked fine. But!!! now i have a problem creating instances of other classes for example: Convert con = new Convert(); does not work. it says Cannot identify symbol Convert. But i know for a fact the class Convert is compiled and also is in same directory. Every time i try and compile a program it does not like any instance methods. (with all java files on my computer); If you create a Convert constructor which accepts an arg - and you did not create a no-arg constructor, that error will occur. Java provides the no-arg constructor free of charge, unless you create a constructor - in which case the no-arg constructor is -not- provided. Back to top Guest Posted: Thu Feb 23, 2006 4:12 am    Post subject: Re: Problem Creating instances in Java actually my class Convert has a contructor with one argument. and i call instance as follows Convert con = new Convert(temp); however when i compile from the command line it will not compile but if i use a program such as netbeans or JCreate it compiles. I dont understand why though Cheers Back to top Roedy Green Guest Posted: Thu Feb 23, 2006 6:12 am    Post subject: Re: Problem Creating instances in Java On Wed, 22 Feb 2006 21:58:59 -0500, "Hal Rosser" <hmrosser (AT) bellsouth (DOT) net> wrote, quoted or indirectly quoted someone who said : Quote: If you create a Convert constructor which accepts an arg - and you did not create a no-arg constructor, that error will occur. Java provides the no-arg constructor free of charge, unless you create a constructor - in which case the no-arg constructor is -not- provided. see http://mindprod.com/jgloss/gotchas.html#CONSTRUCTOR You might check out the other gotchas lying in wait for you while you are there. -- Canadian Mind Products, Roedy Green. http://mindprod.com Java custom programming, consulting and coaching. Back to top Roedy Green Guest Posted: Thu Feb 23, 2006 6:12 am    Post subject: Re: Problem Creating instances in Java On 22 Feb 2006 17:42:09 -0800, carlito (AT) whitmore (DOT) fsnet.co.uk wrote, quoted or indirectly quoted someone who said : Quote: Convert con = new Convert(); You either screwed up your import or your classpath. It is time to start putting all your code in a package. Package-less stuff is just for experiments. See http://mindprod.com/jgloss/classpath.html http://mindprod.com/jgloss/import.html http://mindprod.com/jgloss/package.html -- Canadian Mind Products, Roedy Green. http://mindprod.com Java custom programming, consulting and coaching. Back to top Roedy Green Guest Posted: Thu Feb 23, 2006 3:12 pm    Post subject: Re: Problem Creating instances in Java On 22 Feb 2006 20:07:56 -0800, carlito (AT) whitmore (DOT) fsnet.co.uk wrote, quoted or indirectly quoted someone who said : Quote: however when i compile from the command line it will not compile but if i use a program such as netbeans or JCreate it compiles. see http://mindprod.com/jgloss/gettingstarted.html http://mindprod.com/jgloss/helloworld.html http://mindprod.com/jgloss/classpath.html there are dozens of ways to do it wrong. -- Canadian Mind Products, Roedy Green. http://mindprod.com Java custom programming, consulting and coaching. Back to top Guest Posted: Thu Feb 23, 2006 7:12 pm    Post subject: Re: Problem Creating instances in Java Thanks Guys everything really helped i have subsequently fixed the problem. The problem was that when setting my classpath i did not include working directory as follows: Classpath = C:\SomeFolder;C:\SomeOtherFolder\Some.jar; . ; I needed to include the dot to include working dir Cheers Again Andrew Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         AppletTalk.com Forum Index -> Java Help All times are GMT Page 1 of 1   Jump to: Select a forum Java Newsgroups----------------Java DiscussionsWeb-based java games comp.lang.java 3D Graphics API's for Java Java: Support and criticism Java System Announcements comp.lang.java.api JavaBeans Java and CORBA Java and Databases comp.lang.java.developer Java GUI Toolkits Java Help comp.lang.java.javascript JVM, native methods and hardware comp.lang.java.misc Java Language Programming Security and Java comp.lang.java.setup Java Software Tools comp.lang.java.tech ibm.software.java.linux  Non-English Java Newsgroups----------------Java Language (German)Language Java (Français)Java (Italian)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.