使用String.format方法: 这是最常见且简单的方法之一,特别适用于需要在字符串左侧补零的情况。 java public static String padLeftWithZeros(int number, int totalLength) { return String.format("%0" + totalLength + "d", number); } // 示例 System.out.println(padLeftWithZeros(123, 5)); // 输出...
publicstaticStringleftPad(Stringinput,intlength,StringpadStr){if(input==null||padStr==null){returnnull;}if(input.length()>=length){returninput;}intpadLength=length-input.length();StringBuilderpaddedString=newStringBuilder();paddedString.append(padStr.repeat(padLength));paddedString.append(input);re...
10);System.out.println(paddedNumber);// 输出 0000007890}publicstaticStringpadLeftWithZeros(intnumber,inttotalLength){StringBuildersb=newStringBuilder(String.valueOf(number));while(sb.length()<totalLength){sb.insert(0,'0');}returnsb.toString();}}...
文章目录通过 String.format 方式来进行左位补零操作通过 NumberFormat 方式来进行左位补零操作使用循环实现左位补零操作效果截图 通过 String.format 方式来进行左位补零操作// 1为 int 类型、0代表前面要补位的字符、2代表字符串的长度、d表示参数为整数类型 String s = String.format("%02d", 1); System....
Java String split() returns an array after splitting the string using the delimiter or multiple delimiters such as common or whitespace. Java String replaceAll() The String.replaceAll(regex, replacement) in Java replaces all occurrences of a substring matching the specified regular expression with th...
public boolean endsWith(String suffix) JavaString endsWith()方法示例 在下面的例子中,我们有两个字符串str1和str2,我们正在检查字符串是否以指定的后缀结尾。 publicclassEndsWithExample{publicstaticvoidmain(String args[]){Stringstr1=newString("This is a test String");Stringstr2=newString("Test ABC"...
how-can-i-pad-an-integers-with-zeros-on-the-left 如何在整数左填充0 问题 如何在整数左填充0 举例1 = “0001” 答案一,String.format String.format("%05d", yournumber); 用0填充,总长度为5 https://docs.oracle.com/javase/8/docs/api/java/util/Formatter.html 答案二,ApacheCommonsLanguage 如果...
1 String.format("%d", 93); // prints 93 Specifying a width: 1 String.format("|%20d|", 93); // prints: | 93| Left-justifying within the specified width: 1 String.format("|%-20d|", 93); // prints: |93 | Pad with zeros: 1 String.format("|%020d|", 93); // prints...
Installation Guide has been updated with changes to Installing With a Configuration File.Options related to string deduplication have been added to the java command tool page. String deduplication reduces the memory footprint of String objects on the Java heap by taking advantage of the fact that ...
String <-- NumberFormatter NumberFormatter : +formatNumber(int num): String 在类图中,我们定义了一个NumberFormatter类,其中包含一个formatNumber()方法用于将数字格式化为固定长度的字符串。 序列图 NumberFormatterClientNumberFormatterClientformatNumber(10)Convert number to stringPad with zeros"10" ...