Question

How to check if a character in a string is numeric with Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        String str = "java 890";

        char character = str.charAt(5);

        if (Character.isDigit(character)) {
            System.out.println("character is numeric");
        }
    }
}

    
/*
run:
    
character is numeric
    
*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        String str = "java 890";
        int index = 5;
        
        if (Character.isDigit(str.charAt(index))) {
            System.out.println("character is numeric");
        }
    }
}
 
     
/*
run:
     
character is numeric
     
*/

 

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