Java - Write code to Determine if the string has at least one letter in upper case

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Requirements

Write code to Determine if the string has at least one letter in upper case

Demo

import static org.apache.camel.util.StringQuoteHelper.doubleQuote;

public class Main{
    public static void main(String[] argv){
        String text = "book2s.com";
        System.out.println(hasUpperCase(text));
    }//from www .j  a  v  a  2 s .c o  m
    /**
     * Determines if the string has at least one letter in upper case
     * @param text the text
     * @return <tt>true</tt> if at least one letter is upper case, <tt>false</tt> otherwise
     */
    public static boolean hasUpperCase(String text) {
        if (text == null) {
            return false;
        }

        for (int i = 0; i < text.length(); i++) {
            char ch = text.charAt(i);
            if (Character.isUpperCase(ch)) {
                return true;
            }
        }

        return false;
    }
}

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