This is the problem in steps the final output is at the bott

This is the problem in steps the final output is at the bottom.

5.7 Program: Data visualization (Java)

(1) Prompt the user for a title for data. Output the title. (1 pt)

Ex:

(2) Prompt the user for the headers of two columns of a table. Output the column headers. (1 pt)

Ex:

(3) Prompt the user for data points. Data points must be in this format: string, int. Store the information before the comma into a string variable and the information after the comma into an integer. The user will enter -1 when they have finished entering data points. Output the data points. Store the string components of the data points in an ArrayList of strings. Store the integer components of the data points in a second ArrayList of integers. (4 pts)

Ex:

(4) Perform error checking for the data point entries. If any of the following errors occurs, output the appropriate error message and prompt again for a valid data point.

If entry has no comma

Output: Error: No comma in string. (1 pt)

If entry has more than one comma

Output: Error: Too many commas in input. (1 pt)

If entry after the comma is not an integer

Output: Error: Comma not followed by an integer. (2 pts)

Ex:

(5) Output the information in a formatted table. The title is right justified with a minimum of 33 characters. Column 1 is left justified with a minimum of 20 characters. Column 2 is right justified with a minimum of 23 characters. (3 pts)

Ex:

(6) Output the information as a formatted histogram. Each name is right justified with a minimum of 20 characters. (4 pts)

Ex:

This is the preloaded code:

import java.util.Scanner;
import java.util.ArrayList;

public class DataVisualizer {
   public static void main(String[] args) {
      /* Type your code here. */
    
      return;
   }   
}

This is in a Java learnig program not an Java IDE. This question has been answered on chegg before but that code doesn\'t work, I has multiple errors acourding to the learning program. can someone please help me out with this. Thank you.

Solution

DataVisualizer.java

import java.util.ArrayList;
import java.util.Scanner;

public class DataVisualizer {

   public static void main(String[] args) {
       Scanner scan = new Scanner(System.in);
       ArrayList<String> dataStr = new ArrayList<String>();
       ArrayList<Integer> dataPoint = new ArrayList<Integer>();
       System.out.print(\"Enter a title for the data: \");
       String title = scan.nextLine();
       System.out.println(\"You entered: \"+title);
       System.out.print(\"Enter the column 1 header: \");
       String header1 = scan.nextLine();
       System.out.println(\"You entered: \"+header1);
       System.out.print(\"Enter the column 2 header: \");
       String header2 = scan.nextLine();
       System.out.println(\"You entered: \"+header2);
       while(true){
       System.out.print(\"Enter a data point (-1 to stop input): \");
       String s = scan.nextLine();
       if(s.equals(\"-1\")){
           break;
       }
       else{
           String str[] = s.split(\",\");
           if(str.length == 1){
               System.out.println(\"Error: No comma in string.\");
           }
           else if(str.length > 2){
               System.out.println(\"Error: Too many commas in input.\");
           }
           else {
               try{
                   int point = Integer.parseInt(str[1].trim());
                   dataPoint.add(point);
                   dataStr.add(str[0]);
                   System.out.println(\"Data string: \"+str[0]);
                   System.out.println(\"Data integer: \"+point);
               }catch(NumberFormatException e){
                   System.out.println(\"Error: Comma not followed by an integer.\");
               }
           }
       }
       }

       System.out.printf(\"%33s\ \",title);
       System.out.printf(\"%-20s|%23s\ \",header1,header2);
       System.out.println(\"-------------------------------------\");
       for(int i=0; i<dataStr.size(); i++){
           System.out.printf(\"%-20s|%23d\ \",dataStr.get(i),dataPoint.get(i));
       }
       for(int i=0; i<dataStr.size();i++){
           System.out.print(dataStr.get(i)+\" \");
           for(int j=0; j<dataPoint.get(i);j++){
               System.out.print(\"*\");
           }
           System.out.println();
       }
   }

}

Output:

Enter a title for the data: Number of Novels Authored
You entered: Number of Novels Authored
Enter the column 1 header: Author name
You entered: Author name
Enter the column 2 header: Number of novels
You entered: Number of novels
Enter a data point (-1 to stop input): Ernest Hemingway 9
Error: No comma in string.
Enter a data point (-1 to stop input): Ernest, Hemingway, 9
Error: Too many commas in input.
Enter a data point (-1 to stop input): Ernest Hemingway, nine
Error: Comma not followed by an integer.
Enter a data point (-1 to stop input): Ernest Hemingway, 9
Data string: Ernest Hemingway
Data integer: 9
Enter a data point (-1 to stop input): Jane Austen, 6
Data string: Jane Austen
Data integer: 6
Enter a data point (-1 to stop input): -1
Number of Novels Authored
Author name | Number of novels
-------------------------------------
Ernest Hemingway | 9
Jane Austen | 6
Ernest Hemingway *********
Jane Austen ******