title: Appending multiple files into one
body: <p>I have 4 different files in some locations like:
  D:\1.txt
  D:\2.txt
  D:\3.txt and
  D:\4.txt</p>
  
  <p>I need to create a new file as <strong>NewFile.txt</strong>, It should contains all the contents present in the   above files 1.txt, 2.txt,3.txt 4.txt.......</p>
  
  <p>All Data should present in the New Single file(NewFile.txt)..</p>
  
  <p>Please suggest me some idea to do the same in java or Groovy....</p>