CODSTA.IMPT

Minimize * form of "import" statements

Description

This rule flags code that uses * in import statements.

We recommend that you try to "import" only necessary classes and be precise about what you are importing. Otherwise, readers might have a difficult time understanding its context and dependencies. Some people even prefer not using "import" at all (thus requiring that every class reference is fully qualified); this prevents all possible ambiguity and reduces source code changes if package names change.

Example

 package CODSTA;
 import java.io.*;
 
 public class IMPT {
     void method (InputStream in) {
         if (in == null) return;
     }
 }

Reference

http://g.oswego.edu/dl/html/javaCodingStd.html