Character.isLowerCase(char c) || Character.isUpperCase(char c) LowerCase是小写,UpperCase是大写; 判断一个字符是字母或数字 Character.isLetterOrDigit(char c) 将字母转换为大写 Character.toUpperCase(char c); 将字母转换为小写 Character.toLowerCase(char c);...
// isWhitespace方法把字符转换为小写 charupperCase = Character.toUpperCase(character); System.out.println("upperCase="+upperCase);
public static boolean isUpperCase(char ch) { return isUpperCase((int)ch); } public static boolean isUpperCase(int codePoint) { return getType(codePoint) == Character.UPPERCASE_LETTER || CharacterData.of(codePoint).isOtherUppercase(codePoint); } public static boolean isTitleCase(char ch) { ret...
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. 2. toLowerCase() toLowerCase() 方法用于将给定字符转换为小...
将字符转换为小写:使用Character.toLowerCase(char ch)方法将指定的字符转换为小写字母。例如,将字符'A'转换为小写字母'a'的代码如下: 代码语言:txt 复制 char uppercaseChar = 'A'; char lowercaseChar = Character.toLowerCase(uppercaseChar); System.out.println(lowercaseChar); // 输出:a ...
Char the character to be tested. Returns Boolean trueif the character is uppercase;falseotherwise. Attributes RegisterAttribute Remarks Determines if the specified character is an uppercase character. A character is uppercase if its general category type, provided byCharacter.getType(ch), isUPPERCASE_...
char upperCaseChar = 'A'; // 将小写字符转换为大写 char upperCaseConverted = Character.toUpperCase(lowerCaseChar); System.out.println("大写转换: " + upperCaseConverted); // 将大写字符转换为小写 char lowerCaseConverted = Character.toLowerCase(upperCaseChar); ...
public static String toUnderScoreCase(String s, char split) { if (isBlank(s)) { return ""; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < s.length(); i++) { char c = s.charAt(i); boolean nextUpperCase = (i < (s.length() - 1)) && Character.isUpperCase...
Char the character to be tested. Returns Boolean trueif the character is uppercase;falseotherwise. Attributes RegisterAttribute Remarks Determines if the specified character is an uppercase character. A character is uppercase if its general category type, provided byCharacter.getType(ch), isUPPERCASE_...
Determines if the specified character is an uppercase character. C# 複製 [Android.Runtime.Register("isUpperCase", "(C)Z", "")] public static bool IsUpperCase(char ch); Parameters ch Char the character to be tested. Returns Boolean true if the character is uppercase; false otherwise. ...