The **`char[]`** (a character array) and `String` are very similar as they both store a sequence of characters. Although the String class is more extensive (has a ton of functions for manipulating sequence), it is sometimes necessary to convert a String into a character array. 

For example, if a function accepts a parameter as `char[]`, we cannot pass a String to it; so, instead of declaring a `char[]` of size equal to the string's length and copying every character one by one into it, we can use `toCharArray()` makes the task easier.

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# Return value

This function is present in the String class; it returns a `char[]` populated with the character sequence of the string. The size of this array is equal to the string's length.

class Main{
  public static void main(String[] args){
    String str = "Hello world!";
    char[] arr = str.toCharArray();

    for(int i = 0; i < arr.length; i++)
      System.out.print(arr[i]);

    System.out.println("\nSize of char[] = " + arr.length);
  } 
}


What is the toCharArray() method in Java?

Converts a String to a character array for manipulation or passing as a parameter.

What is the toCharArray() method in Java?

Return value

Example