Example 3: Java Program to Check Alphabet using isAlphabetic() Methodclass Main { public static void main(String[] args) { // declare a variable char c = 'a'; // checks if c is an alphabet if (Character.isAlphabetic(c)) { System.out.println(c + " is an alphabet."); } else {...
使用Character类的isLetter方法: Character类提供了一个名为isLetter的方法,该方法可以判断给定的字符是否为字母(包括大写和小写)。 java public class CheckLetter { public static void main(String[] args) { char ch = 'A'; if (Character.isLetter(ch)) { System.out.println(ch + " is an alphabet....
importjava.util.Scanner;publicclassCheckAlphabet{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.println("请输入一个字符:");charinput=scanner.next().charAt(0);if(Character.isLetter(input)){System.out.println("输入的是字母");}else{System.out.println("输入的不...
使用Character类判断字符是否为英文字母 下面是使用Character类中的isLetter()方法来判断字符是否为英文字母的代码示例: publicclassCheckLetter{publicstaticvoidmain(String[]args){charch='A';if(Character.isLetter(ch)){System.out.println(ch+" is an alphabet.");}else{System.out.println(ch+" is not an...
Now, to check whether ch is vowel or not, we check if ch is any of: ('a', 'e', 'i', 'o', 'u'). This is done using a simple if..else statement. We can also check for vowel or consonant using a switch statement in Java. Example 2: Check whether an alphabet is vowel or...
{// Comparing the current character with the next oneif(word.charAt(i)<=word.charAt(i+1)){// If the current character is less than or equal to the next one, continue}else{// If the current character is greater than the next one, return falsereturnfalse;}}// If the loop completes...
the character (Unicode code point) to be tested. Returns Boolean trueif the character is a Unicode alphabet character,falseotherwise. Attributes RegisterAttribute Remarks Determines if the specified character (Unicode code point) is alphabetic.
}//Obtaining set of keysSet<Character> keys = map.keySet();/* Display count of chars if it is * greater than 1\. All duplicate chars would be * having value greater than 1. */for(Character ch:keys){if(map.get(ch) >1){
* character of "The Base64 Alphabet" as specified in Table 1 of * RFC 2045. */ public static Encoder getMimeEncoder(int lineLength, byte[] lineSeparator) { Objects.requireNonNull(lineSeparator); int[] base64 = Decoder.fromBase64;
在Java中,可以使用Character类的isLetter()方法来判断一个字符是否是字母。而针对字符串的第一个字符,我们可以直接使用charAt()方法获取第一个字符,然后再判断是否为字母。 下面是一个示例代码: publicclassFirstLetterCheck{publicstaticbooleanisFirstLetterAlphabet(Stringstr){if(str==null||str.isEmpty()){return...