字符串为大写

// 来自 NowJava.com - 时  代  Java

public class Main {

 

        public static void main(String[] args) {

 

                String str = "string touppercase example";

                String strUpper = str.toUpperCase();

                 

                System.out.println("Original String: " + str);

                System.out.println("String changed to upper case: " + strUpper);

        }

}