public static boolean isAsciiAlphaUpper(char ch) {
        return ch >= 'A' && ch <= 'Z';
    }
<p>Checks whether the character is ASCII 7 bit alphabetic upper case.</p>

<pre>
  CharUtils.isAsciiAlphaUpper('a')  = false
  CharUtils.isAsciiAlphaUpper('A')  = true
  CharUtils.isAsciiAlphaUpper('3')  = false
  CharUtils.isAsciiAlphaUpper('-')  = false
  CharUtils.isAsciiAlphaUpper('\n') = false
  CharUtils.isAsciiAlphaUpper('&copy;') = false
</pre>

@param ch  the character to check
@return true if between 65 and 90 inclusive
android/android_framework/base/src/main/java/lang3/CharUtils.java