String.length()

Examples

Length of a string and of an empty string:

void main() {
    IO.println("Hello".length());
    IO.println("".length());
}

Output:

5
0

The length is often used to get the last character:

void main() {
    String word = "Java";
    char last = word.charAt(word.length() - 1);
    IO.println(last);
}

Output:

a

Notes

For a string, length() is a method with parentheses. For an array, length is a field without them: array.length. Lists use size().

The length is counted in char units. Most emoji take two char values, so "😀".length() is 2. The number of real characters is text.codePointCount(0, text.length()).