如何格式化带有前导零的Java字符串?
2022-08-31 05:40:16
下面是字符串,例如:
"Apple"
我想添加零来填写8个字符:
"000Apple"
我该怎么做?
下面是字符串,例如:
"Apple"
我想添加零来填写8个字符:
"000Apple"
我该怎么做?
public class LeadingZerosExample {
public static void main(String[] args) {
int number = 1500;
// String format below will add leading zeros (the %0 syntax)
// to the number above.
// The length of the formatted string will be 7 characters.
String formatted = String.format("%07d", number);
System.out.println("Number with leading zeros: " + formatted);
}
}
如果您必须在没有库帮助的情况下执行此操作:
("00000000" + "Apple").substring("Apple".length())
(有效,只要你的字符串长度不超过 8 个字符。