Cannot convert String to Integer in Java [duplicate]

Question

I have written a function to convert string to integer

   if ( data != null )
   {
        int theValue = Integer.parseInt( data.trim(), 16 );
        return theValue;
   }
   else
       return null;

I have a string which is 6042076399 and it gave me errors:

Exception in thread "main" java.lang.NumberFormatException: For input string: "6042076399"
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
    at java.lang.Integer.parseInt(Integer.java:461)

Is this not the correct way to convert string to integer?

Answer 1

Here's the way I prefer to do it:

Edit (08/04/2015):

As noted in the comment below, this is actually better done like this:

String numStr = "123";
int num = Integer.parseInt(numStr);

Answer 2

An Integer can't hold that value. 6042076399 (413424640921 in decimal) is greater than 2147483647, the maximum an integer can hold.

Try using Long.parseLong.