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  #1  
Old September 19th, 2005, 04:58 PM
Ace23 Ace23 is offline
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String to int???

can somebody plz give me an example of how to turn a string into an int....i look in the java api and couldn't find it

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Old September 20th, 2005, 09:28 AM
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Code:
String str = "123";
int i = Integer.parseInt(str);

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Old September 20th, 2005, 10:59 AM
MichaelSoft MichaelSoft is offline
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or if you want to do it the easy way:

int i;
String str = "123";
i = str - 0;


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Old September 20th, 2005, 02:10 PM
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Oh sure, but what fun is the easy way?

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Old November 30th, 2005, 04:13 AM
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@michaelsoft: That is really not possible in Java (nor in C actually). The minus operator is not overloaded to handle strings. In the case of the plus, which can handle strings and ints, the result is a string which you cannot assign to an int.

Another way (though not necessary easier or better) is:

String s = "2";
int i = Integer.valueOf(s).intValue();


in java 5 you can even drop the intValue() part:

String s = "2";
int i = Integer.valueOf(s);


With valueOf you can also get the Wrapper classes for primitive types if you need them.

If your number has a different base you can do it like this:
String s = "2A";
int i = Integer.parseInt(s,16);

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