Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
11th Edition
ISBN: 9780134743356
Author: Paul J. Deitel, Harvey Deitel
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 8.1E
- 1. Read the problem statement.
- 2. Formulate the
algorithm using pseudocode and top-down, stepwise refinement. - 3. Write a Java
program . - 4. Test, debug and execute die Java program.
- 5. Process three complete sets of data.
(Gas Mileage) Drivers are concerned with the mileage their automobiles get. One driver has kept track of several trips by recording the miles driven and gallons used for each tankful. Develop a Java application that will input the miles driven and gallons used (both as integers) for each trip. The program should calculate and display the miles per gallon obtained for each trip and print the combined miles per gallon obtained for all trips up to this point. All averaging calculations should produce floating-point results. Use class Scanner and sentinel-controlled iteration to obtain the data from the user.
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Change the following code so that there is always at least one way to get from the left corner to the top right, but the labyrinth is still randomized.
The player starts at the bottom left corner of the labyrinth. He has to get to the top right corner of the labyrinth as fast he can, avoiding a meeting with the evil dragon. Take care that the player and the dragon cannot start off on walls. Also the dragon starts off from a randomly chosen position
public class Labyrinth { private final int size; private final Cell[][] grid;
public Labyrinth(int size) { this.size = size; this.grid = new Cell[size][size]; generateLabyrinth(); }
private void generateLabyrinth() { Random rand = new Random(); for (int i = 0; i < size; i++) { for (int j = 0; j < size; j++) { // Randomly create walls and paths grid[i][j] = new Cell(rand.nextBoolean()); } } // Ensure start and end are…
Change the following code so that it checks the following 3 conditions:
1. there is no space between each cells (imgs)
2. even if it is resized, the components wouldn't disappear
3. The GameGUI JPanel takes all the JFrame space, so that there shouldn't be extra space appearing in the frame other than the game.
Main():
Labyrinth labyrinth = new Labyrinth(10);
Player player = new Player(9, 0); Dragon dragon = new Dragon(9, 9);
JFrame frame = new JFrame("Labyrinth Game"); GameGUI gui = new GameGUI(labyrinth, player, dragon);
frame.add(gui); frame.setSize(600, 600); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true);
public class GameGUI extends JPanel { private final Labyrinth labyrinth; private final Player player; private final Dragon dragon; //labyrinth, player, dragon are just public classes
private final ImageIcon playerIcon = new ImageIcon("data/images/player.png");…
Make the following game user friendly with GUI, with some simple graphics. The GUI should be in another seperate class, with some ImageIcon, and Game class should be added into the pane.
The following code works as this: The objective of the player is to escape from this labyrinth. The player starts at the bottom left corner of the labyrinth. He has to get to the top right corner of the labyrinth as fast he can, avoiding a meeting with the evil dragon. The player can move only in four directions: left, right, up or down. There are several escape paths in all labyrinths. The player’s character should be able to moved with the well known WASD keyboard buttons. If the dragon gets to a neighboring field of the player, then the player dies. Because it is dark in the labyrinth, the player can see only the neighboring fields at a distance of 3 units.
Cell Class:
public class Cell { private boolean isWall; public Cell(boolean isWall) { this.isWall = isWall; } public boolean isWall() { return…
Chapter 4 Solutions
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
Ch. 4 - Fill in the blanks in each of the following...Ch. 4 - Fill in the blanks in each of the following...Ch. 4 - Fill in the blanks in each of the following...Ch. 4 - Fill in the blanks in each of the following...Ch. 4 - Prob. 1.5SRECh. 4 - Fill in the blanks in each of the following...Ch. 4 - Fill in the blanks in each of the following...Ch. 4 - Fill in the blanks in each of the following...Ch. 4 - State whether each of the following is true or...Ch. 4 - State whether each of the following is true or...
Ch. 4 - State whether each of the following is true or...Ch. 4 - State whether each of the following is true or...Ch. 4 - State whether each of the following is true or...Ch. 4 - Prob. 2.6SRECh. 4 - State whether each of the following is true or...Ch. 4 - Prob. 2.8SRECh. 4 - State whether each of the following is true or...Ch. 4 - State whether each of the following is true or...Ch. 4 - Write four different Java statements that each add...Ch. 4 - Write Java statements to accomplish each of the...Ch. 4 - Write Java statements to accomplish each of the...Ch. 4 - Write Java statements to accomplish each of the...Ch. 4 - Write Java statements to accomplish each of the...Ch. 4 - Write a Java statement to accomplish each of the...Ch. 4 - Write a Java statement to accomplish each of the...Ch. 4 - Write a Java statement to accomplish each of the...Ch. 4 - Write a Java statement to accomplish each of the...Ch. 4 - Combine the statements that you wrote in Exercise...Ch. 4 - Determine the value of the variables in the...Ch. 4 - Identify and correct the errors in each of the...Ch. 4 - What is wrong with the following while statement?...Ch. 4 - Compare and contrast the if single-selection...Ch. 4 - Explain what happens when a Java program attempts...Ch. 4 - Describe the two ways in which control statements...Ch. 4 - What type of iteration would be appropriate for...Ch. 4 - What is the difference between preincrementing and...Ch. 4 - Prob. 6.1ECh. 4 - What does the following program print? 1. //...Ch. 4 - 1. Read the problem statement. 2. Formulate the...Ch. 4 - 1. Read the problem statement. 2. Formulate the...Ch. 4 - 1. Read the problem statement. 2. Formulate the...Ch. 4 - 1. Read the problem statement. 2. Formulate the...Ch. 4 - (Find the Largest Number) The process of finding...Ch. 4 - Prob. 13.1ECh. 4 - (Find the Two Largest Numbers) Using an approach...Ch. 4 - Prob. 15.1ECh. 4 - What does the following program print? 1. //...Ch. 4 - What does the following program print? 1. //...Ch. 4 - (Dangling-else Problem) The Java compiler always...Ch. 4 - (Another Dangling-else Problem) Based on the...Ch. 4 - (Another Dangling-else Problem) Based on the...Ch. 4 - Prob. 21.1ECh. 4 - (Palindromes) A palindrome is a sequence of...Ch. 4 - (Printing the Decimal Equivalent of a Binary...Ch. 4 - (Checkerboard Pattern of Asterisks) Write an...Ch. 4 - (Multiples of 2 with an Infinite Loop) Write an...Ch. 4 - (Whats Wrong with This Code?) What is wrong with...Ch. 4 - Prob. 27.1ECh. 4 - (Sides of a Right Triangle) Write an application...Ch. 4 - Prob. 29.1ECh. 4 - Write an application that estimates the value of...Ch. 4 - Write an application that computes the value of e...Ch. 4 - (Enforcing Privacy with Cryptography) The...Ch. 4 - (World Population Growth) World population has...
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