title: How to decompress .gz file containing multiple files
body: <p>I want to decompress multiple .gz file by using <strong>java</strong> and all the files(.gz) have multiple files in it:</p>
  
  <p>I've file structure like this:</p>
  
  <pre><code>D:\folder\file1.gz
  D:\folder\file2.gz
  </code></pre>
  
  <p>And all the gz files are like:</p>
  
  <pre><code>file1.gz
  abc11.txt
  abc12.txt
  abc13.txt
  abc14.txt
  </code></pre>
  
  <pre><code>file2.gz
  abc21.txt
  abc22.txt
  abc23.txt
  abc24.txt
  </code></pre>