String bankAccount="123456789011121314";
int length=bankAccount.length();
String str=bankAccount.substring(0, length-11)+"*******"+bankAccount.substring(length-2);
System.out.println(str);
public String replaceCard(String src){
StringBuilder resultBuilder = new StringBuilder();
String part1 = src.subString(0,src.length - 2);
String part2 = src.subString(src.length - 10,src.length);
resultBuilder.append(part1);
resultBuilder.append("**********");
resultBuilder.append(part2);
return resultBuilder.toString();
}
String cardNo = "1234567890123456";
String startNo = cardNo.substring(0,2);
String endNo = cardNo.substring(10);
System.out.println(startNo+"*******"+endNo);
substring先截取,replace替换