How to Sort Characters in String in Java - Step by Step Examples

How to Sort Characters in String in Java ?

Answer

To sort characters in a string in Java, you can convert the string to a character array, sort the array, and then convert it back to a string.

✐ Examples

1 Sort Characters in Ascending Order

In this example,

We create a string named str.
We convert the string to a character array using toCharArray() method.
We sort the character array in ascending order using Arrays.sort() method.
We create a new string from the sorted character array using String() constructor.
Finally, we print the sorted string in ascending order.

Java Program

import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        String str = "hello world";
        char[] charArray = str.toCharArray();
        Arrays.sort(charArray);
        String sortedString = new String(charArray);
        System.out.println("Sorted string in ascending order: " + sortedString);
    }
}

Output

Sorted string in ascending order:  dehllloorw

2 Sort Characters in Descending Order

In this example,

We create a string named str.
We convert the string to a character array using toCharArray() method.
We sort the character array in descending order by first sorting it in ascending order using Arrays.sort() method and then reversing the array.
We create a new string from the sorted character array using String() constructor.
Finally, we print the sorted string in descending order.

Java Program

import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        String str = "hello world";
        char[] charArray = str.toCharArray();
        Arrays.sort(charArray);
        String sortedString = new String(charArray);
        sortedString = new StringBuilder(sortedString).reverse().toString();
        System.out.println("Sorted string in descending order: " + sortedString);
    }
}

Output

Sorted string in descending order: wroolllhed

Summary

In this tutorial, we learned How to Sort Characters in String in Java language with well detailed examples.

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How to Sort Characters in String in Java - Step by Step Examples

How to Sort Characters in String in Java ?

Answer

✐ Examples

1 Sort Characters in Ascending Order

Java Program

Output

2 Sort Characters in Descending Order

Java Program

Output

Summary

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