将前导零添加到字符串
问题描述：
我想在字符串中添加一些前导零，总长度必须为8个字符.例如:
I want to add some leading zeroes to a string, the total length must be eight characters. For example:
123应该是00000123
1243应该是00001234
123456应该是00123456
12345678应该是12345678
123 should be 00000123
1243 should be 00001234
123456 should be 00123456
12345678 should be 12345678
最简单的方法是什么?
答
俗气的小把戏
String str = "123";
String formatted = ("00000000" + str).substring(str.length())
如果您改用数字开头:
Int number = 123;
String formatted = String.format("%08d", number);