编辑代码

/*04 张浩宇*/
class Main {
	public static void main(String[] args) {
        String string = "My name is Tom, I come from China.";
        char[] upperCases = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".toCharArray();
        for (int i = 0; i < string.length(); i ++) for (int j = 0; j < upperCases.length; j ++) {
            if (string.charAt(i) == upperCases[j]) System.out.print(upperCases[j] + ", ");
        }
    }
}