java determines whether a character is a letter
1. First create a function check to receive a string
2. Then take the first character of the string. If it is in the range of a-z or A-Z, it is a letter, otherwise it is not
Recommended tutorial: java tutorial
/** * 判断一个字符串是否为字母 * @param fstrData * @return */ public static boolean check(String fstrData) { char c = fstrData.charAt(0); if (((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) { return true; } else { return false; } }
Test:
public static void main(String[] args) { System.out.println(check("a")); // true System.out.println(check("1")); // false }
The above is the detailed content of Java determines whether a character is a letter. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

Atom editor mac version download
The most popular open source editor

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

Dreamweaver CS6
Visual web development tools

SublimeText3 English version
Recommended: Win version, supports code prompts!
