This errors is just because your class path is not configured correctly.
This code means PbandPackage must be at same level as Test Class.
Means :
-Test.class
-PbandPackage-Tools.class
or you can include class files in Project Class path :
Project Properties -> Build Path -> Libraries -> Add Class Folder
and Select Folder where you PbandPackage contains class file.
and now run your Tools.java file.
..........
But in case of Eclipse its very easy to create a Java Project.
1. Create a new Java Project
2. Create src folder for your project.
3. Create packages.
4. Import required classes by Pressing Ctrl + O
5. run your programs.