Java Practicals

Exception Handling 5 - Write a Java program that reads a file and throws an exception if the file is empty.


            import java.io.File;
            import java.io.FileNotFoundException;
            import java.util.Scanner;
            
            public class Exception_handling_5 {
              public static void main(String[] args) {
                try {
                  checkFileNotEmpty("test1.txt");
                  System.out.println("File is not empty.");
                } catch (FileNotFoundException e) {
                  System.out.println("Error: " + e.getMessage());
                } catch (EmptyFileException e) {
                  System.out.println("Error: " + e.getMessage());
                }
              }
            
              public static void checkFileNotEmpty(String fileName) throws FileNotFoundException, EmptyFileException {
                File file = new File(fileName);
                Scanner scanner = new Scanner(file);
            
                if (!scanner.hasNextLine()) {
                  scanner.close();
                  throw new EmptyFileException("File is empty.");
                }
            
                scanner.close();
              }
            }
            
            class EmptyFileException extends Exception {
              public EmptyFileException(String message) {
                super(message);
              }
            }

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