# How do I sort string of numbers in ascending order?

In the following example we are going to sort a string containing the following numbers `"2, 5, 9, 1, 10, 7, 4, 8"` in ascending order, so we will get the result of `"1, 2, 4, 5, 7, 8, 9, 10"`.

``````package org.kodejava.util;

import java.util.Arrays;

public class SortStringNumber {
public static void main(String[] args) {
// We have some string numbers separated by comma. First we
// need to split it, so we can get each individual number.
String data = "2, 5, 9, 1, 10, 7, 4, 8";
String[] numbers = data.split(",");

// Convert the string numbers into Integer and placed it into
// an array of Integer.
Integer[] intValues = new Integer[numbers.length];
for (int i = 0; i < numbers.length; i++) {
intValues[i] = Integer.parseInt(numbers[i].trim());
}

// Sort the number in ascending order using the
// Arrays.sort() method.
Arrays.sort(intValues);

// Convert back the sorted number into string using the
// StringBuilder object. Prints the sorted string numbers.
StringBuilder builder = new StringBuilder();
for (int i = 0; i < intValues.length; i++) {
Integer intValue = intValues[i];
builder.append(intValue);
if (i < intValues.length - 1) {
builder.append(", ");
}
}
System.out.println("Before = " + data);
System.out.println("After  = " + builder);
}
}
``````

When we run the program we will get the following output:

``````Before = 2, 5, 9, 1, 10, 7, 4, 8
After  = 1, 2, 4, 5, 7, 8, 9, 10
``````

1. navi

What will you do if any of the string exceeds long range?
Thank you!

• Hi Navi,

When the string exceeds the long range I think it will not added to the list to be sorted. When trying to convert the string into `long` using the `Long.parseLong()` method a `NumberFormatException` will be thrown when the string exceeds the long range.

``````try {
long number = Long.parseLong("12345678901234567890");
} catch (NumberFormatException e) {
e.printStackTrace();
}
``````

If you are working with a bigger number you might consider using the `java.math.BigInteger` instead.

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