It’s worth mentioning thattheStringUtils.capitalize()method is null-safe and works for empty input strings as well: String emptyOutput = StringUtils.capitalize(EMPTY_INPUT); assertEquals(EMPTY_EXPECTED, emptyOutput); String nullOutput = StringUtils.capitalize(null); assertNull(nullOutput); 6. Concl...
Capitalize first letter of each word Capitalize first letter of String Here are the steps to convert first letter of string to uppercase in java Get first letter of String firstLetStr using str.substring(0,1). Get remaining String remLetStr using str.substring(1). Convert first letter of ...
我使用capitalizeFirstChar名字capitalizeFirstChar而不是capitalizeFirstLetter,因为OP并不要求使用代码来大写整个字符串中的第一个字母,而是大写第一个字符(当然,如果是字母)。 const使我们能够将capitalizeFirstChar声明为常量,这是需要的,因为作为程序员,您应始终明确声明您的意图。 在我执行的基准测试中,string.charAt(...
Using String.replaceAll() Method Using Apache Commons TextIn this short guide, you will learn how to capitalize the first letter of each word in a string using Java. We have already learned to capitalize the first letter of a string in Java. But capitalizing each word in a string is a ...
const capitalizeStr = str.charAt(0).toUpperCase() + str.slice(1); console.log(capitalizeStr); Output: Java2blog Let’s see how it works by going through each method used to capitalize first letter in Javascript. charAt() charAt() method returns character at given index in String. Syntax...
*@method: capitalizeTheFirstLetter() *@param: [str] *@return: java.lang.String */publicstaticStringcapitalizeTheFirstLetter(Stringstr) { char firstChar = str.toUpperCase().charAt(0);StringnextStr = str.toLowerCase().substring(1);returnfirstChar + nextStr; ...
下面是自己写的三个方法,直接类名.方法即可调用,注意此处未做异常处理. 1.下划线转驼峰 lowerLineToHump() 2.首字母大写 capitalizeTheFirstLetter() 3.驼峰转下划线 humpToLowerLine() package yang.demo.justwri
Matcher; import java.util.regex.Pattern; public class Main{ public static String capitalize(final String word) { if (word.length() > 1) { return String.valueOf(word.charAt(0)).toUpperCase() + word.substring(1); }//from w w w .java2 s .co m return word; } } ...
在上述示例中,我们定义了一个方法capitalizeFirstLetter,它将字符串的首字母大写,并返回结果。 3. 快速补全关键字、方法和变量名 在Java编码过程中,快速补全关键字、方法和变量名是提高效率的关键。以下是一些常用的快捷键: 补全关键字:输入关键字的首几个字母,然后按下Ctrl + Space进行补全。
* @method: capitalizeTheFirstLetter() * @param: [str] * @return: java.lang.String */ public static String capitalizeTheFirstLetter(String str) { char firstChar = str.toUpperCase().charAt(0); String nextStr = str.toLowerCase().substring(1); ...