how to import user defined packages in java program?

Question

some.java

import A.A1.*;

Directory structure

  A

  |_A2

  |  |_some.java

  |_A1

     |_someother files and java files

Here the import statement is not working. Can someone tell me why?

Answer 1

I hope that A is not your current directory.

Packages work with directory hierarchies.

<curr-dir>

 |-A

 | |-A1

 | | |- Class1.class

 | | `- Class2.class

 | `-A2

 |   |-Class3.class

 |   `-Class4.class

 `-<other dirs>

Now if <curr-dir> is in your classpath then import A.A1.* will import Class1 and Class2