Question

How to get the first and the last digit of a number in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        int number = 87354;

        int firstDigit = Integer.parseInt(Integer.toString(number).substring(0, 1));
        System.out.println(firstDigit);
 
        int lastDigit = number % 10;
        System.out.println(lastDigit);       
    }
}
 
 
 
/*
run:
 
8
4

*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        int number = 87354;

        int firstDigit = number;
        while (firstDigit >= 10)  
            firstDigit /= 10; 
        System.out.println(firstDigit);
 
        int lastDigit = number % 10;
        System.out.println(lastDigit);       
    }
}
 
 
 
/*
run:
 
8
4

*/

 

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