如何打印字符串中的每三个字符？java

public class PrintEveryThreeChars {
    public static void main(String[] args) {
        String str = "HelloWorld";
        printEveryThreeChars(str);
    }

    public static void printEveryThreeChars(String str) {
        for (int i = 0; i < str.length(); i += 3) {
            int endIndex = Math.min(i + 3, str.length());
            String substring = str.substring(i, endIndex);
            System.out.println(substring);
        }
    }
}

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