Thread: how do i try/catch this?

hey people!

im entirely new to java..i need a little bit of help with my assignment code..i want to use try catch. but i dont exactly know where to insert it.i keep getting errors when i insert it after "enter file name". but it says i cannot do that.i want to get a message saying the file isnt existing when wrong file names are inputted by the user.

 
/**
 * to back up txt files
 * @author (Dinushke Arthnayake) 
 * @version (1.0.0)
 */
import java.util.Scanner;
 
import javax.swing.*;
 
import java.io.*;
 
public class BackItUpTxt
{
    public static void main(String agrs[]) throws IOException
 
    {
        String D_Play = "File does not exist!";
        try
        {
        Scanner yeet1=new Scanner(System.in);
 
        System.out.println("Enter file that you want to backup:");
 
        String yeet2=yeet1.nextLine();
 
 
 
        System.out.println("Enter password to secure your backup:");
 
        String yeet3=yeet1.nextLine();
 
 
            for (int count =6; count > 0 && yeet3 != "acbt"; count--)
            {
            System.out.println("Wrong password. " + (count-1) + " attempts left.Enter password again:");
 
            yeet3=yeet1.nextLine();
        }
 
 
        Encrip.encrip(yeet3,yeet2);
 
        Backup.backup(yeet2);
   }
 catch(FileNotFoundException e){
        JOptionPane.showMessageDialog (null,D_Play);
 
        System.exit(-1);
    }
 
}
}

how exactly do you use the equals method here? please do help me..it stil says that variable yeet1 cannot be found because of the closing bracket before the 'catch' statement..what do you think i should do?how can i access the variable yeet1,yeet2 and yeet3??

.it stil says that variable yeet1 cannot be found

Please copy the full text of the error message and paste it here.

It sounds like you are having a problem with scope. Variables defined inside of {} are NOT visible or usable outside of the {}. You need to define the variables outside of the {} and give them null or 0 values and then change their values inside of the {}. The new values will then be available when you come out of the {}.

Encrip.encrip(yeet3,yeet2);

Backup.backup(yeet2);

are causing some problems

are causing some problems

Please explain. If you get error messages, copy and paste here the full text.