formatStarName static method
将姓名变为*号
Implementation
static String formatStarName(String name) {
String newStr;
if (name.length == 2) {
newStr = "*" + name.substring(1, 2);
} else if (name.length == 3) {
newStr = name.substring(0, 1) + "*" + name.substring(2);
} else if (name.length == 4) {
newStr = name.substring(0, 2) + "*" + name.substring(3);
} else if (name.length > 4) {
newStr = name.substring(0, 2) + "**" + name.substring(4);
} else {
newStr = name;
}
return newStr;
}