title: java split () method
body: <p>I've got a string '123' (yes, it's a string in my program). Could anyone explain, when I use this method:</p>
  
  <pre><code>String[] str1Array =  str2.split(" ");
  </code></pre>
  
  <p>Why I got <code>str1Array[0]='123'</code> rather than <code>str1Array[0]=1</code>?</p>