How do I convert a String to an int in Java?

Question

My String contains only numbers, and I want to return the number it represents.

For example, given the string "1234" the result should be the number 1234.

How can I convert a String to an int in Java?

Answer 1

Hello @kartik,

We can use the parseInt(String str) method of the Integer wrapper class for converting a String value to an integer value.

For example:

String strValue = "12345";
Integer intValue = Integer.parseInt(strVal);

The Integer class also provides the valueOf(String str) method:

String strValue = "12345";
Integer intValue = Integer.valueOf(strValue);

We can also use toInt(String strValue) of NumberUtils Utility Class for the conversion:

String strValue = "12345";
Integer intValue = NumberUtils.toInt(strValue);

Hope it helps!!
Thank you!