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Joined: Apr 11, 2006
Posts: 19
I have downloaded source code from the internet and i have the .java files and the jar files. Im using Blue J and when i try copying the .java files into Blue J and compiling it says im trying to change the package statement to a package that does not exist in this project. Where do i find the package, is it inside the jar files and what do i do with the package. Thanks.
Bear Bibeault
Author and ninkuma

Joined: Jan 10, 2002
Posts: 63858

Moving to the beginner forum.

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Campbell Ritchie

Joined: Oct 13, 2005
Posts: 46362
The simplest answer is not to use BlueJ.
It is not at all good at using packages.

  • Copying the files to BlueJ with the package statements (always at the beginning of the file) left out.
  • Copying and pasting the class files to a proper IDE (eg NetBeans, Eclipse), but you will have to set up packages with the same names as your package statements.
  • Using a text editor or JCreator, with the package statements left in.

  • You may need to compile the classes individually, using
    javac -d .
    then to run them use
    java packagename.ClassName
    for the class with the main method in.
    See whether any of those is helpful
    I agree. Here's the link:
    subject: Packages
    It's not a secret anymore!