Determine whether it is a letter in java

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] >= &#39;a&#39; && chars[i] <= &#39;z&#39;) || (chars[i] >= &#39;A&#39; && chars[i] <= &#39;Z&#39;);
            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!