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slip30A.java
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slip30A.java
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import java.util.Scanner;
class InvalidNumberException extends Exception {
public InvalidNumberException(String message) {
super(message);
}
}
public class PalindromeNumberChecker {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
try {
System.out.print("Enter a number: ");
String input = scanner.nextLine().trim();
if (input.isEmpty()) {
throw new InvalidNumberException("Number is Invalid");
}
if (input.equals("0")) {
throw new InvalidNumberException("Number is Zero");
}
if (!input.matches("-?\\d+")) {
throw new InvalidNumberException("Number is Invalid");
}
int number = Integer.parseInt(input);
if (isPalindrome(number)) {
System.out.println("The number " + number + " is a palindrome.");
} else {
System.out.println("The number " + number + " is not a palindrome.");
}
} catch (InvalidNumberException e) {
System.err.println("Error: " + e.getMessage());
} catch (NumberFormatException e) {
System.err.println("Error: Number is not valid.");
} finally {
scanner.close();
}
}
public static boolean isPalindrome(int number) {
String numStr = String.valueOf(Math.abs(number));
String reversedNumStr = new StringBuilder(numStr).reverse().toString();
return numStr.equals(reversedNumStr);
}
}