java字符串操作,字符大小写转化
字符串转化为list
String str = "aaa,bbb,ccc";
List<String> list = java.util.Arrays.asList(str.split(","));
字符串转化为字符数组:
char[] tmp = strList.get(i).toCharArray();
字符大小写转化
if(Character.isLowerCase(tmp[j])){
Character.toUpperCase(tmp[j]));
}
if(Character.isUpperCase(tmp[j])){
Character.toLowerCase(tmp[j]);
}