So yeah here is my problem. I get an inputmismatchexception at the line of int count. How do i Fix this issue ? But one rule I must not touch the code line 32 - 100+.
package main;
import java.util.*;
import java.io.*;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int pick =0;
//Menu
System.out.println("Pick an option");
System.out.println("1. Add");
System.out.println("2. Modify");
System.out.println("3. Delete");
System.out.println("4. View");
System.out.print("Enter #: ");
pick = in.nextInt();
System.getProperty("line.separator");
if(pick == 1)
{
String data = "database.txt";
try {
FileWriter fileWriter = new FileWriter(data);
// Always wrap FileWriter in BufferedWriter.
BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
// Note that write() does not automatically
// append a newline character.
String fname = in.next();
String lname = in.next();
String city = in.next();
String id = in.next();
bufferedWriter.write(fname);
bufferedWriter.newLine();
bufferedWriter.write(lname);
bufferedWriter.newLine();
bufferedWriter.write(city);
bufferedWriter.newLine();
bufferedWriter.write(id);
// Always close files.
bufferedWriter.close();
} catch (IOException ex) {
System.out.println("Cannot Write !");
}
}
try {
Scanner input = new Scanner(new FileReader("database.txt"));
// read how many records are there
int count = input.nextInt();
// remove the excess newline
input.nextLine();
for(int i = 0; i < count; i++) {
String fname = input.nextLine();
String lname = input.nextLine();
String city = input.nextLine();
String id = input.nextLine();
System.out.printf("Student #%d\n", i+1);
System.out.println(fname);
System.out.println(lname);
System.out.println(city);
System.out.println(id);
System.out.println();
}
input.close();
}
catch (FileNotFoundException e) {
System.out.println("File not found!");
}
}
}
Please guide me the correct way to achieve my objective.
