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    <p><code>Double</code> doesn't have any concept of maintaining insignificant digits.</p> <p>The problem isn't the <code>Double</code> (or <code>double</code>) value you're using - it's how you then convert it <em>back</em> into a string. You should use a <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DecimalFormat.html" rel="nofollow noreferrer"><code>DecimalFormat</code></a> which specifies the appropriate number of decimal places.</p> <p>Also note that you're currently using <code>Double.parseDouble</code> which returns a <code>double</code>, but you're assigning it to a <code>Double</code> variable, which will box the value - potentially unnecessarily.</p> <p>Sample code:</p> <pre><code>import java.text.DecimalFormat; public class Test { public static void main(String[] args) { String text = "500.00"; double number = Double.parseDouble(text); DecimalFormat format = new DecimalFormat("0.00"); String formatted = format.format(number); System.out.println(formatted); } } </code></pre> <p>Note that the above code will give you two decimal digits even if there are <em>more</em> digits available.</p> <p>Additionally, if exact decimal digits matter to you, you might want to consider using <code>BigDecimal</code> instead of <code>double</code>. This is particularly important if your values actually represent currency. You should understand the difference between a floating <em>binary</em> point type (such as <code>double</code>) and a floating <em>decimal</em> point type (such as <code>BigDecimal</code>) and choose appropriately between them.</p>
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    1. POGetting a double with .00
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    1. USJon Skeet
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    1. COSorry Jon. It was a mistake. I added the java docs link in your answer and removed it too.
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    2. COThank you, it was useful, you were absoluteli right, the problem was not the Double itself, it was the logic i was using. So i have modified the code adding a String var that gets the number and format it so i can show it as i need.
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      1. USSebastián Aguerre
 

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