Thread: when they write " . " it stops

Hi, i have some homework and i am really struggling with it. assignment is The user enters some text into the console , which you write to the file. As soon as the user enters only the dot (line "."), You will no longer type it and exit the program. We are working in Netbeans. Can someone please help me? Thank you

can you please show me how would the code looks like? thx

--- Update ---

because i have this


public static void main(String[] args) {

String s = "123";
int i = Integer.parseInt(s); /**POTŘEBA K ÚKOLU*/

try {
FileWriter w = new FileWriter("mytext.txt");
w.write("Ahoj, tohle je text co zapisuji do souboru./n");
w.write("další řádek text....");
if(inputString.compareTo(".") == 0)
return;

} catch (IOException ex) {
System.out.println("Cant open mytext.txt.");
}


and its not workin

I cant send it here like zip file idk why or what am i doin wrong, so im gonna send the code at least. Thank you so much for helping and if you had time, can you please take a look on my other parts of homeworks (they are like note in the code)

 
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package textfilewrite;
 
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;
 
/**
 *
 * @author nicolsevcikova
 */
public class TextFileWrite {
 
 
     /**Homework is : 1) The user enters some text into the console in the cycle, which you write to the file. As soon as the user enters only the dot (line "."), You will no longer type it and exit the program.
2) Load a text file and write down whether or not it was *.
3) Read individual lines from the text file that contain numbers. Finally, write the largest number and the average of the numbers.
        */
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
 
         String s = "123";
        int i = Integer.parseInt(s); /**needed for homework*/  
 
        try {
            FileWriter w = new FileWriter("mujtext.txt");
            w.write("Hi this is some text./n");
            w.write("next line of text....");
            if(inputString.compareTo(".") == 0) 
  return;
 
        } catch (IOException ex) {
            System.out.println("Cant open mytext.txt.");
        }
 
 
        try {
            Scanner file = new Scanner(new File("mytext.txt"));
            int largest = file.nextInt();
 
 
            while(file.hasNextInt()) {
                int number = file.nextInt();
 
                if(number > largest) {
                    largest = number;
                }
 
                System.out.println(number);
            }
 
            file.close();
 
            System.out.println("Biggest nubmer is : " + largest);
        } catch(IOException e) {
            System.out.println(e.getMessage());
        }
    }
}

here it is, this is one class. A have also class named Scanner which is empty and class inputString which is also empty.

Thank you for helping me

this happend

 
Exception in thread "main" java.lang.UnsupportedOperationException: Not supported yet.
	at textfilewrite.inputString.compareTo(inputString.java:15)
	at textfilewrite.TextFileWrite.main(TextFileWrite.java:42)
/Users/nicolsevcikova/Library/Caches/NetBeans/12.0/executor-snippets/run.xml:111: The following error occurred while executing this line:
/Users/nicolsevcikova/Library/Caches/NetBeans/12.0/executor-snippets/run.xml:94: Java returned: 1
BUILD FAILED (total time: 0 seconds)

and Homework is : 1) The user enters some text into the console in the cycle, which you write to the file. As soon as the user enters only the dot (line "."), You will no longer type it and exit the program.
2) Load a text file and write down whether or not it was *.
3) Read individual lines from the text file that contain numbers. Finally, write the largest number and the average of the numbers.

Originally Posted by Norm

Where is the variable: inputString declared?
Where is it assigned a value?


The error message says inputString is a class. The posted code does not show that

a told you, that i have also 2 empty classes. One of them is inputString. In it is just

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package textfilewrite;
 
/**
 *
 * @author nicolsevcikova
 */
class inputString {
 
    static int compareTo(String string) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
 
}

because i dont know what towrite in it


Homework is : 1) The user enters some text into the console in the cycle, which you write to the file. As soon as the user enters only the dot (line "."), You will no longer type it and exit the program.
2) Load a text file and write down whether or not it was *.
3) Read individual lines from the text file that contain numbers. Finally, write the largest number and the average of the numbers.
*/

well im suposed to do this : when someone write in the text " . " the loop will end.

well i tried this but its doin nothing so

 String input = scanner.nextLine();
    if (input.equals(" . ")) {
       return;

Can you please just write me the code how it is suposed to be? Thank you