title: Show error when i wrote import java.io.*;
body: <p>why i am getting error when i write import java.io.*; in java file ?</p>
  
  <pre><code>dev_ps@DPS:~/Desktop/MorningDose$ javac dev.java
  ----------
  1. WARNING in /home/dev_ps/Desktop/MorningDose/dev.java (at line 2)
      import java.io.*;
             ^^^^^^^
  
  The import java.io is never used
  </code></pre>