OK I AM GETTING PRETTY FED UP ASKING SO MANY QUESTIONS AND GETTING ASNWERS FULL
ID: 3876247 • Letter: O
Question
OK I AM GETTING PRETTY FED UP ASKING SO MANY QUESTIONS AND GETTING ASNWERS FULL OF ERRORS OR EVEN CODE THAT DOESN'T MAKE SENSE. PLEASE RUN YOUR CODE AND CHECK IF IT WORKS OR NOT. I PAY FOR CHEGG AND THUS EVERY QUESTION COSTS ME MONEY. PLEASE THINK ABOUT THAT AND TRY NOT TO BS THE SOLUTION LIKE SO MANY OTHER PEOPLE HAVE DONE. THANKS!
In this programming question, you have the following classes: Hero.java and HeroTester.java.
Hero.java is as follows:
package question2;
import java.util.ArrayList;
import java.util.Scanner;
public class Hero {
private String name;
private int health;
private int max_items;
private ArrayList<String> items;
/**
* Constructor used to set values.
*
* @param name for the hero's name.
* @param max_items for the maximum number of items that the hero can carry.
*/
public Hero (String name, int max_items) {
// set the hero's name to provided name
this.name = name;
try {
// If the max_items is less than zero or more than 10, throw IllegalArgumentException
if(max_items < 0 || max_items > 10)
throw new IllegalArgumentException("The maximum number of items that you can carry is from 1 to 10");
// set the max_items to the the second argument provided.
this.max_items = max_items;
} catch(IllegalArgumentException e) {
System.out.println("You cannot carry that many items! " + e.getMessage());
}
// set hero's health to 100
this.health = 100;
// initialize the items list as empty
this.items = new ArrayList<>();
}
/**
* Default constructor
*/
public Hero () {
// set the hero's name to "Anonymous"
this.name = "Anonymous";
// set the max_items to 2
this.max_items = 2;
// set hero's health to 100
this.health = 100;
// initialize the items list as empty
this.items = new ArrayList<>();
}
/**
* Inventory method which stores the items the hero's items.
*
* @return a string using the .toString method
*/
public String inventory() {
String sb = "";
// If the hero is not carrying anything, print a suitable message
if (items.size() == 0) {
sb += ("Your hero is unburdened by wordly possessions.");
}
// prints the list of items carried by hero
else {
sb += ("Displaying Inventory : ");
sb += ("[");
// Loop1: To print all the items
for (int i = 0; i < items.size(); i++) {
sb += (items.get(i) + ", ");
}
sb += (" ]");
}
return sb.toString();
}
/**
* Take method for adding items to hero's inventory/.
*
* @param item is used for the hero to take/ carry an item
*/
public void take(String item) {
System.out.println("Handling Sir " + getName() + " " + item);
// If the inventory is full, print an appropriate message
if(items.size() == max_items) {
System.out.println("Your hero is overburdened and cannot carry more...");
} else {
//add the item to the inventory
items.add(item);
}
}
/**
* Drop method used for hero to drop items from the hero's inventory
*
* @param item which the hero may/may not drop. Depends on either hard-coded hero
* or the final user input.
*/
public void drop(String item) {
// If the hero is not carrying the item, print an appropriate message
if(!items.contains(item)) {
System.out.println("Your hero is not carrying that item - " + item);
} else {
//drop the item from the inventory
System.out.println("Brave sir " + getName() + " drops his " + item);
items.remove(item);
}
}
/**
* Take damage method for the hero to take damage and lose health
*
* @param amount is used to keep track of how much damage the hero can take.
*/
public void takeDamage(int amount) {
health -= amount;
//if hero's health is less than 0, make it 0
if(health < 0) {
health = 0;
System.out.println("Remember, a hero can't have negative health nor health > 100");
}
}
/**
* Heal method is used to heal the hero
*
* @param amount is used to heal the hero.
*/
public void heal(int amount) {
health += amount;
//if hero's health is more than 100, make it 100
if(health > 100) {
health = 100;
System.out.println("Remember, a hero can't have negative health nor health > 100");
}
}
@Override
/**
* toString method used for printing necessary information.
*/
public String toString() {
return "Displaying hero: Hero: Brave Sir " +this.name+ ", "+
"health: " + this.health + ", " + "can carry: " + this.max_items+ ", "
+ "current inventory: " + inventory();
}
/**
* getName method to get the hero's name.
*
* @return hero's name
*/
public String getName() {
return this.name;
}
/**
* setName method to set the hero's name.
*
* @param name is hero's name.
*/
public void setName(String name) {
this.name = name;
}
}
HeroTester is as follows:
package question2;
import java.util.Scanner;
public class HeroTester {
public static void main(String[] args) {
//Option 1 will decide if user chooses hard coded heroes
// or to create a user inputted hero
int opt1;
Scanner sc = new Scanner(System.in);
do {
System.out.print("1. Hard code heroes 2. Enter Hero values Enter your option: ");
opt1 = sc.nextInt();
System.out.println(" ");
if(opt1 != 1 && opt1 != 2) {System.out.println("Please enter a valid choice!");}
}while(opt1!=1 && opt1 !=2);
if(opt1 == 1) {
//Hard code the hero values
System.out.println(" ----------Creating Heroes----------");
System.out.println("Creating Hero with no name.");
//create a new hero using default constructor
Hero hero1 = new Hero();
//print hero1 state
System.out.println(hero1.toString());
System.out.println("Creating Hero with a name.");
//create a new hero using argumented constructor
Hero hero2 = new Hero("Robin", 3);
//print hero2 state
System.out.println(hero2.toString());
//Add an item to inventory
hero2.take("sword");
System.out.println(hero2.inventory());
//Add an item to inventory
hero2.take("spoon");
System.out.println(hero2.inventory());
//Add an item to inventory
hero2.take("cape of good fortune");
System.out.println(hero2.inventory());
//Add an item to inventory
hero2.take("tomato");
System.out.println(hero2.inventory());
//Drop an item from inventory
hero2.drop("spoon");
System.out.println(hero2.inventory());
//Drop an item from inventory
hero2.drop("watch");
System.out.println(hero2.inventory());
//Drop an item from inventory
hero2.drop("sword");
System.out.println(hero2.inventory());
//Drop an item from inventory
hero2.drop("cape of good fortune");
System.out.println(hero2.inventory());
//Drop an item from inventory
hero2.take("pointy hat of success");
System.out.println(hero2.inventory());
//Reduce health
System.out.println("Brave sir " + hero2.getName() + " is so busy worrying about his inventory"
+ "he doesn't notice the danger and takes 50"
+ " damage from a shrubery!");
hero2.takeDamage(50);
System.out.println(hero2.toString());
//Increase health
System.out.println("Brave sir " + hero2.getName() + " takes a deep breath"
+ " and recovers 5 health");
hero2.heal(5);
System.out.println(hero2.toString());
//Reduce health
System.out.println("Brave sir " + hero2.getName() + " is so busy worrying about his inventory"
+ " he doesn't notice the danger and takes 119"
+ " damage from a shrubery!");
hero2.takeDamage(119);
System.out.println(hero2.toString());
//Increase health
System.out.println("Brave sir " + hero2.getName() + " enters the Avatar state"
+ " and heals for 128 points.");
hero2.heal(128);
System.out.println(hero2.toString());
//print the heros' final state
System.out.println(" ----------Final State----------");
System.out.println(hero1.toString());
System.out.println(hero2.toString());
} else if(opt1==2){
//User wants to enter values
Hero hero;
int opt2;
do {
System.out.print("1. Create an Anonymous Hero. 2. Create a hero with a name.");
System.out.print(" Enter your choice: ");
opt2 = sc.nextInt();
if(opt2!=1 && opt2 != 2) {System.out.println("Please enter a valid choice! ");}
}while(opt2!=1 && opt2 != 2);
System.out.println(" ");
if(opt2 == 1) {
System.out.println("Creating Hero with no name.");
//create a new hero using default constructor
hero = new Hero();
//print hero state
System.out.println(hero.toString());
} else {
System.out.println("Creating Hero with a name.");
System.out.print("Enter hero's name: ");
String name = sc.next();
System.out.print(" Enter max items that the hero can carry: ");
int max = sc.nextInt();
//create a new hero using argumented constructor
hero = new Hero(name, max);
//print hero state
System.out.println(hero.toString());
}
while(true) {
//Menu options
System.out.print(" 1. Add item to inventory 2. Drop item from inventory"
+ " 3. Cause damage to the hero 4. Heal the hero"
+ " 5. Display State of the hero 6. Exit ");
System.out.print(" Enter your choice: ");
int opt3;
opt3 = sc.nextInt();
System.out.println(" ");
switch(opt3) {
case 1:
//add item to hero's inventory
System.out.print("Enter item's name to be added: ");
String take = sc.next();
hero.take(take);
System.out.println(hero.toString());
break;
case 2:
//drop item from hero's inventory
System.out.print("Enter item's name to be dropped: ");
String drop = sc.next();
hero.drop(drop);
System.out.println(hero.toString());
break;
case 3:
//Cause damage to the hero
System.out.print("Enter the health damage amount: ");
int damage = sc.nextInt();
hero.takeDamage(damage);
System.out.println(hero.toString());
break;
case 4:
//Heal the hero
System.out.print("Enter the healing amount: ");
int heal = sc.nextInt();
hero.heal(heal);
System.out.println(hero.toString());
break;
case 5:
//Display the hero's state
System.out.println(hero.toString());
break;
case 6:
System.out.println("Exiting!!");
return;
default:
//In case user enters an invalid option.
System.out.println(" Enter a valid option!!");
}
}
}
}
}
Using the following classes, find a way to load and save to a file instead of forcing the user to create a new character every time. Using the following is not allowed:
- String Builder
- Buffered Readers
- Apache commons or any others of the type.
Remeber, the key here is to allow the user to save a character they created, then load that character from a text file in your desktop (or a location of your preference) and use it to run through the code. Then allow the user to save the progress on the same file, again.
IMPORTANT: The user must be able to save to a file AND then LOAD it back into the same program!
Explanation / Answer
import java.util.Hashtable;
import java.util.Enumeration;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.FileOutputStream;
import java.io.FileInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
public class SimpleSerialization {
/**
* Create a simple Hashtable and serialize it to a file called
* HTExample.ser.
*/
private static void doSave() {
System.out.println();
System.out.println("+------------------------------+");
System.out.println("| doSave Method |");
System.out.println("+------------------------------+");
System.out.println();
Hashtable h = new Hashtable();
h.put("string", "Oracle / Java Programming");
h.put("int", new Integer(36));
h.put("double", new Double(Math.PI));
try {
System.out.println("Creating File/Object output stream...");
FileOutputStream fileOut = new FileOutputStream("HTExample.ser");
ObjectOutputStream out = new ObjectOutputStream(fileOut);
System.out.println("Writing Hashtable Object...");
out.writeObject(h);
System.out.println("Closing all output streams... ");
out.close();
fileOut.close();
} catch(FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Loads the contents of a previously serialized object from a file called
* HTExample.ser.
*/
private static void doLoad() {
System.out.println();
System.out.println("+------------------------------+");
System.out.println("| doLoad Method |");
System.out.println("+------------------------------+");
System.out.println();
Hashtable h = null;
try {
System.out.println("Creating File/Object input stream...");
FileInputStream fileIn = new FileInputStream("HTExample.ser");
ObjectInputStream in = new ObjectInputStream(fileIn);
System.out.println("Loading Hashtable Object...");
h = (Hashtable)in.readObject();
System.out.println("Closing all input streams... ");
in.close();
fileIn.close();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch(FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("Printing out loaded elements...");
for (Enumeration e = h.keys(); e.hasMoreElements(); ) {
Object obj = e.nextElement();
System.out.println(" - Element(" + obj + ") = " + h.get(obj));
}
System.out.println();
}
/**
* Sole entry point to the class and application.
* @param args Array of String arguments.
*/
public static void main(String[] args) {
doSave();
doLoad();
}
}
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