How do I simplify my "if-statement" in Java?

I want to simplify my if-statement:

if (charray[i] == 'A' || charray[i] == 'E' || charray[i] == 'I' || charray[i] == 'O') {
//some code
}

I want to check if my element in charray is a vowel (excluding "U") or not.