java输出获取英文字母

public static void printEnglish()
{
int firstEnglish, lastEnglish;
char firstE = 'A', lastE = 'Z';      //获取首字母与末字母的值

firstEnglish = (int)firstE;
lastEnglish = (int)lastE;

System.out.println("英文字母表： ");
for(int i = firstEnglish; i <= lastEnglish; ++i)
{
char uppercase, lowercase;

uppercase = (char)i;
lowercase = (char)(i + 32);

System.out.print("" + uppercase + lowercase);
}

System.out.println();
}