String str = "aBcD";
char[] ctr = str.toCharArray();
String Estr = "";
String s = "";
for (int i = ctr.length-1; i >= 0; i--) {
char c = ctr[i];
if(Character.isUpperCase(c)){
s = String.valueOf(c).toLowerCase();
}else{
s = String.valueOf(c).toUpperCase();
}
Estr = Estr + s;
}
System.out.println(Estr);
java字母大小写及排序转换
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转载自blog.csdn.net/weixin_40452506/article/details/105490174
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