java determines whether a string is a letter:
记录一个方法，用来判断一个字串中字符是否全为字母
public class MainClass {
public static void main(String[] args){
String str = "hhhggdxszfff";
boolean is_boolean = isPhonticName(str);
System.out.println(is_boolean);
}
public static boolean isPhonticName(String str) {
char[] chars=str.toCharArray();
boolean isPhontic = false;
for(int i = 0; i < chars.length; i++) {
isPhontic = (chars[i] >= 'a' && chars[i] <= 'z') || (chars[i] >= 'A' && chars[i] <= 'Z');
if (!isPhontic) {
return false;
}
}
return true;
}
}The above code traverses the string through a loop, and then uses chars[i] >= 'a' in the loop && chars[i] <= 'z') || (chars[i] >= 'A' && chars[i] <= 'Z' statement determines whether each character in the string is a letter.
For more java knowledge, please pay attention to java basic tutorial.
The above is the detailed content of Determine whether it is a letter in java. For more information, please follow other related articles on the PHP Chinese website!
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
