How to change strings into numbers in java

In this article Xiaobian for you to introduce in detail "how to turn a string into a number in java", the content is detailed, the steps are clear, and the details are handled properly. I hope that this article "how to turn a string into a number in java" can help you solve your doubts.

Method 1:

Integer.parseInt ():

This method, we are through the character type of a number into an integer process, let's look at the code and run a result!

Package Change;public class TrunChange {public static void main (String [] args) {String s = "0000012342"; int a = Integer.parseInt (s); System.out.println ("before the string is:" + s); System.out.println ("the converted number is:" + a);}}

As we can see in the results, the string before conversion is different from the comparison after conversion. And the usage of Integer.valueOf () is the same.

Method 2:

Float.parseFloat ():

If we use this method, we convert a numeric string into a floating-point number, the code and the result are as follows:

Package Change;public class TrunChange {public static void main (String [] args) {String s = "0000012342"; float b=Float.parseFloat (s); System.out.println ("before the string is:" + s); System.out.println ("the converted number is:" + b);}}

The number shown in this result is followed by a decimal point, which shows that our results are correct.

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