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Check if a string contains only alphabets in Java using Regex
At first, convert the string into character array. Here, name is our string −
char[] ch = name.toCharArray();
Now, loop through and find whether the string contains only alphabets or not. Here, we are checking for not equal to a letter for every character in the string −
for (char c : ch) {
if(!Character.isLetter(c)) {
return false;
}Following is an example to check if a string contains only alphabets using Regex
Example
public class Main {
public static boolean checkAlphabet(String name) {
char[] ch = name.toCharArray();
for (char c : ch) {
if(!Character.isLetter(c)) {
return false;
}
}
return true;
}
// Main method
public static void main(String[] args) {
String str1 = "Tom1";
System.out.println("String1 = " + str1);
System.out.println("Does String1 contains only alphabets? = " + checkAlphabet(str1));
String str2 = "Tim";
System.out.println("String2 = " + str2);
System.out.println("Does String2 contains only alphabets? = " + checkAlphabet(str2));
}
}Output
String1 = Tom1 Does String1 contains only alphabets? = false String2 = Tim Does String2 contains only alphabets? = true
Updated on: 20-Sep-2019
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