Difference between revisions of "Convert a String to a Number"

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{{topTenTips}}
 
{{topTenTips}}
==String to int==
 
 
<question xmlns:htm="http://www.w3.org/1999/xhtml" lang="java" className="Demo"><prog>
 
<question xmlns:htm="http://www.w3.org/1999/xhtml" lang="java" className="Demo"><prog>
 
public class Demo{
 
public class Demo{

Revision as of 21:24, 31 December 2007

The static method Integer.parseInt will do the trick

There is a danger that the string does not represent a valid number in which case an exception will be raised.

There are plenty of similar routines such as: Float.parseFloat Long.parseLong Double.parseDouble Boolean.parseBoolean

The value "1234" is a string, you need to treat it as a number - to add 1, giving 1235.

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