JAVA PROGRAM - File saving and loading 1. Using the code below implement an opti

ID: 3815781 • Letter: J

Question

JAVA PROGRAM - File saving and loading

1. Using the code below implement an option to save the plants to a file. You must also be able to load the saved information from a previously saved file.

2. Use the file class and/or scanner class for file saving/loading methods

3. You MUST submit a sample file that can be loaded into your program without any changes (except the file path)

package flowerpack;

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

}
}
if(flag==0)
{
System.out.println("plant not found") ;
}
break;
case 3:
input.nextLine();
System.out.print("Enter the name of the plant you want to search : ");
name=input.nextLine();
int f=0;
for(Plant plant:flowerPack)
{
if(plant.getName().equalsIgnoreCase(name))
{
System.out.println("plant found sucessfully") ;
f=1;
break;
}
}
if(f==0)
{
System.out.println("plant not found") ;
}
break;
case 4:
input.nextLine();
System.out.print("Enter the name of the plant you want to filter: ");
name=input.nextLine();
f=0;
for(Plant plant:flowerPack)
{
if(plant.getName().equalsIgnoreCase(name))
{
System.out.println("Name: " + plant.getName() + " ID: " + plant.getID()) ;
f=1;
}
}
if(f==0)
{
System.out.println("NO plant of this name in List") ;
}
break;
case 5: System.exit(0);
}
}
}catch(Exception e)
{
System.out.println(e);
}
}

}

*************

package flowerpack;

public class Plant {
String name;
String ID;
Plant(String name,String ID)
{
this.name=name;
this.ID=ID;
}
public String getName()
{
return name;
}
public String getID()
{
return ID;
}
}
class Flower extends Plant
{
String color;
boolean thorns;
boolean smell;
public Flower(String name, String ID,String color,boolean thorns,boolean smell) {
super(name, ID);
this.color=color;
this.thorns=thorns;
this.smell=smell;
}

}
class Fungus extends Plant
{
String Color;
boolean Poisonous;
public Fungus(String name, String ID,String Color,boolean Poisonous) {
super(name, ID);
this.Color=Color;
this.Poisonous=Poisonous;
}

}
class Weed extends Plant
{
String Color;
boolean Poisonous;
boolean Edible;
boolean Medicinal;
public Weed(String name, String ID,String Color,boolean Poisonous,boolean Edible, boolean Medicinal) {
super(name, ID);
this.Color=Color;
this.Poisonous=Poisonous;
this.Edible=Edible;
this.Medicinal=Medicinal;
}

}

Explanation / Answer

package flowerpack;

import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Scanner;

public class FlowerPack {
public static void main(String[] args) {
try {
ArrayList<Plant> flowerPack = new ArrayList<>();
Scanner input = new Scanner(System.in);
int choice;
String name, color, ID;
boolean poisonous, edible, medicinal, smell, thorns;
while (true) {
System.out.println(" 1. Add plants");
System.out.println("2. Remove plants");
System.out.println("3. Search plants");
System.out.println("4. Filter plants");
System.out.println("5. Save plants to file");
System.out.println("6. Load plants from file");
System.out.println("7. Quit");
System.out.print("Enter your choice: ");
choice = input.nextInt();
switch (choice) {
case 1:
input.nextLine();
System.out.print("You want to add Flower, Fungus or Weed? <Flower / Fungus / Weed> ");
String type = input.nextLine();
if (type.equalsIgnoreCase("Flower")) {
System.out.print("Enter name : ");
name = input.nextLine();
System.out.print("Enter ID : ");
ID = input.nextLine();
System.out.print("Enter color : ");
color = input.nextLine();
System.out.print("Has thorns? ");
thorns = input.hasNextBoolean();
input.nextLine();
System.out.print("Has smell? ");
smell = input.hasNextBoolean();
input.nextLine();
flowerPack.add(new Flower(name, ID, color, thorns, smell));
} else if (type.equalsIgnoreCase("Fungus")) {
System.out.print("Enter name : ");
name = input.nextLine();
System.out.print("Enter ID : ");
ID = input.nextLine();
System.out.print("Enter color : ");
color = input.nextLine();
System.out.print("Is it poisonous? ");
poisonous = input.hasNextBoolean();
input.nextLine();
flowerPack.add(new Fungus(name, ID, color, poisonous));
} else if (type.equalsIgnoreCase("Weed")) {
System.out.print("Enter name : ");
name = input.nextLine();
System.out.print("Enter ID : ");
ID = input.nextLine();
System.out.print("Enter color : ");
color = input.nextLine();
System.out.print("Is it Poisonous? ");
poisonous = input.hasNextBoolean();
input.nextLine();
System.out.print("Is it Edible? ");
edible = input.hasNextBoolean();
input.nextLine();
System.out.print("Is it Medicinal? ");
medicinal = input.hasNextBoolean();
input.nextLine();
flowerPack.add(new Weed(name, ID, color, poisonous, edible, medicinal));
}
break;
case 2:
input.nextLine();
System.out.print("Enter the name of the plant you want to remove : ");
name = input.nextLine();
int flag = 0;
for (Plant plant : flowerPack) {
if (plant.getName().equalsIgnoreCase(name)) {
System.out.println("plant removed sucessfully");
flag = 1;
break;
}
}
if (flag == 0) {
System.out.println("plant not found");
}
break;
case 3:
input.nextLine();
System.out.print("Enter the name of the plant you want to search : ");
name = input.nextLine();
int f = 0;
for (Plant plant : flowerPack) {
if (plant.getName().equalsIgnoreCase(name)) {
System.out.println("plant found sucessfully");
f = 1;
break;
}
}
if (f == 0) {
System.out.println("plant not found");
}
break;
case 4:
input.nextLine();
System.out.print("Enter the name of the plant you want to filter: ");
name = input.nextLine();
f = 0;
for (Plant plant : flowerPack) {
if (plant.getName().equalsIgnoreCase(name)) {
System.out.println("Name: " + plant.getName() + " ID: " + plant.getID());
f = 1;
}
}
if (f == 0) {
System.out.println("NO plant of this name in List");
}
break;
case 5:
input.nextLine();
System.out.print("Enter the name of the file to save plants: ");
name = input.nextLine();
FileWriter fw = new FileWriter(name);
for(Plant plant: flowerPack)
{
fw.write(plant.toString());
fw.write(" ");
}
fw.close();
break;
case 6:
input.nextLine();
System.out.print("Enter the name of the file to read plants: ");
name = input.nextLine();
FileReader fr = new FileReader(name);
Scanner fileScanner = new Scanner(fr);
while(fileScanner.hasNextLine())
{
String line = fileScanner.nextLine();
String[] data = line.split(",");
String flowertype = data[0];
if (flowertype.equalsIgnoreCase("Flower")) {
name = data[1];
ID = data[2];
color = data[3];
thorns = data[4].equals("true");
smell = data[5].equals("true");
flowerPack.add(new Flower(name, ID, color, thorns, smell));
} else if (flowertype.equalsIgnoreCase("Fungus")) {
name = data[1];
ID = data[2];
color = data[3];
poisonous = data[4].equals("true");
flowerPack.add(new Fungus(name, ID, color, poisonous));
} else if (flowertype.equalsIgnoreCase("Weed")) {
name = data[1];
ID = data[2];
color = data[3];
poisonous = data[4].equals("true");
edible = data[5].equals("true");
medicinal = data[6].equals("true");
flowerPack.add(new Weed(name, ID, color, poisonous, edible, medicinal));
}
}
fr.close();
fileScanner.close();
break;
case 7:
input.close();
System.exit(0);
}

}
} catch (Exception e) {
System.out.println(e);
}
}

}

*************

package flowerpack;

public class Plant {
String name;
String ID;

Plant(String name, String ID) {
this.name = name;
this.ID = ID;
}

public String getName() {
return name;
}

public String getID() {
return ID;
}

public String toString()
{
return name + "," + ID;
}
}

class Flower extends Plant {
String color;
boolean thorns;
boolean smell;

public Flower(String name, String ID, String color, boolean thorns, boolean smell) {
super(name, ID);
this.color = color;
this.thorns = thorns;
this.smell = smell;
}

public String toString()
{
return "flower," + super.toString() + "," + color + "," + thorns + "," + smell;
}
}

class Fungus extends Plant {
String Color;
boolean Poisonous;

public Fungus(String name, String ID, String Color, boolean Poisonous) {
super(name, ID);
this.Color = Color;
this.Poisonous = Poisonous;
}

public String toString()
{
return "fungus," + super.toString() + "," + Color + "," + Poisonous;
}
}

class Weed extends Plant {
String Color;
boolean Poisonous;
boolean Edible;
boolean Medicinal;

public Weed(String name, String ID, String Color, boolean Poisonous, boolean Edible, boolean Medicinal) {
super(name, ID);
this.Color = Color;
this.Poisonous = Poisonous;
this.Edible = Edible;
this.Medicinal = Medicinal;
}
public String toString()
{
return "weed," + super.toString() + "," + Color + "," + Poisonous + "," + Edible + "," + Medicinal;
}
}

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