Java Character Extraction - toCharArray() Method In Java

Strings > Character Extraction >
Siva Nookala - 04 Apr 2016

The method toCharArray() is used to convert any String into array of characters.

The format of toCharArray is:
char[] toCharArray()
This method will convert the invoking string object into a character array of same length as of the invoking string and returns it.

The following example demonstrates toCharArray:

StringtoCharArray

CODE

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class ToCharDemo
{
    public static void main(String arg[])
    {
        String one = "Hyderabad";
        char[] char_one = one.toCharArray();
        System.out.println(one);
        for (int i = 0; i < char_one.length; i++) 
        {
            System.out.print(char_one[i] + " ");
        }    
    }
}

OUTPUT

Hyderabad
H y d e r a b a d

DESCRIPTION

The first output line is just the display of String one i.e Hyderabad. The method toCharArray() converts the String object one into character array char_one. The for loop shows the display of each character of char_one i.e H y d e r a b a d.

THINGS TO TRY

Try this code and see whether it generates a NullPointerException :
String one = null;<br> char[] char_one = one.toCharArray();

Also try with empty string.

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