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More on String Methods

More on String Methods

Learn about some built-in functions allowed on strings.

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Finding a character at an index

Java provides the charAt() method, which when called on a string, returns the character at the specified index.

For example, if the string is “Java” and the index is 22, then ‘v’ will be returned. Below is a demonstration.

Let’s run a simple example.

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class CharacterAtIndex 
{
    public static void main(String args[]) 
    {
        String s1 = "Java";
        System.out.println(s1.charAt(2));   // Character at index 2
        System.out.println(s1.charAt(4));   // ❌ Error: Character at index 4
    }
}

Look at line 6. We are obtaining the character of the string s1 at the 2nd index. It returns v as a result.

At line 7, we are obtaining the character of the string s1 at 4th index. It will give this error: ...