import java.io.*;
// User-defined exception class
class InvalidStringException extends Exception {
public InvalidStringException(String message) {
super(message);
}
}
public class StringValidation {
public static void main(String[] args) {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
try {
System.out.println("Enter a string:");
String input = br.readLine();
// Check if the length is less than 5
if (input.length() < 5) {
throw new InvalidStringException("Invalid String - Length must be at least 5 characters.");
}
// Display the string in uppercase
System.out.println("Valid String in Uppercase: " + input.toUpperCase());
} catch (InvalidStringException e) {
System.out.println("Error: " + e.getMessage());
} catch (IOException e) {
System.out.println("Error in input!");
}
} }
