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PODifference between Long.valueOf(java.lang.String) and new Long(java.lang.String)?
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copied!<p>I'm consolidating code written by two different people and notice that casting a String value into a Long has been done in two different ways. </p> <p>Coder #1 has done this:</p> <pre><code>String strId = "12345678"; ... Long lId = new Long(strId); </code></pre> <p>While coder #2 has done this:</p> <pre><code>String strId = "12345678"; ... Long lId = Long.valueOf(strId); </code></pre> <p>Functionally, the code operates exactly the same. There's a try/catch block around each bit to handle any <code>NumberFormatException</code> that is thrown. The incoming string value is an 8 digit string that represents a decimal: <code>"12345678"</code> and in both cases it is correctly converted into <code>Long</code>.</p> <p>Is there any functional difference between passing the string in the constructor and using Long.valueOf()? I've checked the constructor doc here:</p> <p><a href="http://docs.oracle.com/javase/1.4.2/docs/api/java/lang/Long.html#Long%28java.lang.String%29" rel="nofollow noreferrer">Long(java.lang.String)</a></p> <p>and the docs for valueOf() here:</p> <p><a href="http://docs.oracle.com/javase/1.4.2/docs/api/java/lang/Long.html#valueOf%28java.lang.String%29" rel="nofollow noreferrer">Long.valueOf(java.lang.String)</a></p> <p>As far as I can tell, they both call parseLong() so it doesn't matter which is used. I just want to make sure I'm not setting myself up for some strange behavior further down the road. Also, is either style more "correct" (haha) than the other?</p>

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