Task38

import java.util.Arrays;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Task38 {
    public static void main(String[] args) {

        String[] array = new String[] { "camelCaseFaaFooFaa", "tempArray", "checkVariable" };

        Pattern p = Pattern.compile("([A-Z])");

        for (int i = 0; i < array.length; i++) {
            Matcher m = p.matcher(array[i]);

            StringBuffer strb = new StringBuffer();

            while (m.find()) {
                m.appendReplacement(strb, "_$0");
            }
            System.out.println(strb);
            m.appendTail(strb);
            System.out.println(strb);
            array[i] = strb.toString().toLowerCase();
            System.out.println(strb);

        }
        System.out.println(Arrays.toString(array));
    }

}