- To use BlueJ on an
existing Java program,
use the
Open Non-BlueJ project
button in the
File menu:
- A window will pop up:
Navigate to the directory that contains your Java program:
- Double click on
a directory to
go into that directory:
- Click on
this icon to
go up
one level in the directory tree
(parent directory):
- Double click on
a directory to
go into that directory:
- Select the directory
that contains the Java program:
- Finally,
click on
Open in BlueJ button:
- You should see BlueJ's
main window:
- From now on, you can use the techniques that you learned about BlueJ on this Java program.