Java String字符串補0或空格
時間 2019-12-04
標籤
java
string
字符串
空格
- package cn.com.songjy;
-
- import java.text.NumberFormat;
-
- public class NumberFormatTest {
-
- public static void main(String[] args) {
-
- int i = 1;
-
- NumberFormat nf = NumberFormat.getInstance();
-
- nf.setGroupingUsed(false);
-
- nf.setMaximumIntegerDigits(4);
-
- nf.setMinimumIntegerDigits(4);
-
- System.out.println(nf.format(i));
- }
- }
-
-
-
-
- public class TestStringFormat {
- public static void main(String[] args) {
- int youNumber = 1;
-
-
-
- String str = String.format("%04d", youNumber);
- System.out.println(str);
- }
- }
-
- private static final String STR_FORMAT = "0000";
-
- public static String haoAddOne_2(String liuShuiHao){
- Integer intHao = Integer.parseInt(liuShuiHao);
- intHao++;
- DecimalFormat df = new DecimalFormat(STR_FORMAT);
- return df.format(intHao);
- }