使用toLowerCase()方法将字符串转换为小写形式: String str = "HelloWorld"; String lowerCaseStr = str.toLowerCase(); System.out.println(lowerCaseStr); // 输出:helloworld 复制代码 使用Character类的toUpperCase()方法将字符转换为大写形式: char c = 'a'; char upperCaseChar = Character.toUpperCase(...
tutorialspoint; public class CharacterDemo { public static void main(String[] args) { // create 4 char primitives char ch1, ch2, ch3, ch4; // assign values to ch1, ch2 ch1 = '4'; ch2 = 'q'; // assign uppercase of ch1, ch2 to ch3, ch4 ch3 = Character.toUpperCase(ch1); ch4 ...
publicclassJavaCharactertoUpperCaseExample_2{publicstaticvoidmain(String[] args){// Initialize two char primitives.intcodepoint1 =119;intcodepoint2 =80;// Convert the codepoints to char type.charch1 = (char) codepoint1;charch2 = (char) codepoint2;// Convert the codepoints to uppercase.char...
public static char toUpperCase(char ch) Parameters: The parameter passed is the character value to be converted. Returns: Returns the uppercase equivalent of the specified character, if any; otherwise, the character itself. Example 1: Here, the specified characters are converted into its equivalent...
}intupperCaseChar = Character.toUpperCaseEx(c);if((upperCaseChar == Character.ERROR) || (c != upperCaseChar)) {breakscan; } firstLower += srcCount; }returnthis; }char[] result =newchar[len];/* may grow */intresultOffset =0;/* result may grow, so i+resultOffset ...
```java char ch = 'a';char uppercaseChar = Character.toUpperCase(ch); //将字符转换为大写 char lowercaseChar = Character.toLowerCase(ch); //将字符转换为小写 System.out.println(uppercaseChar); //输出'A'System.out.println(lowercaseChar); //输出'a'```3.使用正则表达式和replace()方法：
char ch = ' '; boolean isWhitespace = Character.isWhitespace(ch); // 返回 true 1. 2. toUpperCase() toUpperCase() 方法用于将给定字符转换为大写: char ch = 'a'; char upperCaseCh = Character.toUpperCase(ch); // 返回 'A' 1.
JavaJava Char Video Player is loading. Current Time0:00 / Duration-:- Loaded:0% This tutorial introduces methods to convert a character to a lowercase/uppercase character. We have four methods that we will see with examples below. Convert a Character to Uppercase/Lowercase Using thetoUpperCase...
Java中char的引用类型 概述 在Java中,char是一种基本数据类型,表示一个16位的Unicode字符。虽然char是基本数据类型,但它也可以被包装成引用类型Character,以便在需要引用类型的场景中使用。本文将详细介绍如何在Java中使用char的引用类型。 流程概览 下面是实现“Java中char的引用类型”的流程概览: ...
Change char case In this chapter you will learn: Is Character a upper/lower Case The following code usesCharacter.isUpperCasemethod to tell is a char a uppercase char publicclassMain {publicstaticvoidmain(String[] args) {charsymbol ='A';/*fromjava2s.com*/if(Character.isUpperCase(symbol)) ...