(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) Enter a title for the data: Number of Novels Authored You entered: Number of Novels Authored Ex Enter the column 1 header: Author name You entered: Author name (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) Enter the column 2 header: Number of novels You entered: Number of novels 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. Ex Enter a data point (-1 to stop input): Jane Austen, 6 Data string: Jane Austen Data integer: 6 • If entry has no comma • 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) • Output: Error: No comma in string. (1 pt) 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. Ex Ex 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 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) Author name Jane Austen Charles Dickens I Ernest Hemingway I Jack Kerouac F. Scott Fitzgerald Mary Shelley Charlotte Bronte Number of Novels Authored I Mark Twain Agatha Christie Ian Flemming Stephen King Oscar Wilde 6 7 8 (6) Output the information as a formatted histogram. Each name is right justified with a minimum of 20 characters. (4 pts) 9 10 11 I I I I I I I Charles Dickens ** Ernest Hemingway ********* Jack Kerouac ***** F. Scott Fitzgerald ******** Mary Shelley Charlotte Bronte *** Mark Twain ******* Agatha Christie ****** Ian Flemming ***** Stephen King Oscar Wilde 1 import java.util.Scanner; 2 import java.util.ArrayList; 3 I Jane Austen *********** 4 public class DataVisualizer { 5 public static void main(String[] args) { Scanner scnr = new Scanner(System.in); /* Type your code here. * Number of novels } 6 20 9 22 8 7 5 11 73 14 54 1
(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) Enter a title for the data: Number of Novels Authored You entered: Number of Novels Authored Ex Enter the column 1 header: Author name You entered: Author name (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) Enter the column 2 header: Number of novels You entered: Number of novels 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. Ex Enter a data point (-1 to stop input): Jane Austen, 6 Data string: Jane Austen Data integer: 6 • If entry has no comma • 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) • Output: Error: No comma in string. (1 pt) 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. Ex Ex 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 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) Author name Jane Austen Charles Dickens I Ernest Hemingway I Jack Kerouac F. Scott Fitzgerald Mary Shelley Charlotte Bronte Number of Novels Authored I Mark Twain Agatha Christie Ian Flemming Stephen King Oscar Wilde 6 7 8 (6) Output the information as a formatted histogram. Each name is right justified with a minimum of 20 characters. (4 pts) 9 10 11 I I I I I I I Charles Dickens ** Ernest Hemingway ********* Jack Kerouac ***** F. Scott Fitzgerald ******** Mary Shelley Charlotte Bronte *** Mark Twain ******* Agatha Christie ****** Ian Flemming ***** Stephen King Oscar Wilde 1 import java.util.Scanner; 2 import java.util.ArrayList; 3 I Jane Austen *********** 4 public class DataVisualizer { 5 public static void main(String[] args) { Scanner scnr = new Scanner(System.in); /* Type your code here. * Number of novels } 6 20 9 22 8 7 5 11 73 14 54 1
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Java - Data Visualization (this is not graded)
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