Overview
In this tutorial, we show you how to convert string with comma to int in Java. We using
java.text.NumberFormat class and
Integer.valueOf() method with
String.replaceAll() method.
Convert string with comma to int using java.text.NumberFormat
package com.jackrutorial;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.Locale;
public class ConvertStringWithCommaToIntExample1 {
public static void main(String[] args) {
String strNumber = "1,073,741,824";
NumberFormat format = NumberFormat.getInstance(Locale.US);
Number number = 0;
try {
number = format.parse(strNumber);
} catch (ParseException e) {
e.printStackTrace();
}
int num = number.intValue();
System.out.println("String => " + strNumber);
System.out.println("String to int => " + num);
}
}
Output
String => 1,073,741,824
String to int => 1073741824
Convert string with comma to int using Integer.valueOf() and String.replaceAll()
package com.jackrutorial;
public class ConvertStringWithCommaToIntExample2 {
public static void main(String[] args) {
String strNumber = "1,073,741,824";
System.out.println("String => " + strNumber);
strNumber = strNumber.replaceAll(",", "");
int num = Integer.valueOf(strNumber).intValue();
System.out.println("String to int => " + num);
}
}
Output
String => 1,073,741,824
String to int => 1073741824
