Homework SourseJAVA Question I need help with this code After I add all 5 f
JAVA Question: I need help with this code. After I add all 5 flowers, I remove one so one index goes to null, but won\'t let me refill that index with another flower.
I\'m gettting \"Pack is Full\" even though 3rd index is null. I need help!
import java.util.Scanner;
public class Flowers {
public static void main(String[] args){
new Flowers ();
}
// This will act as our program switchboard
public Flowers (){
Scanner input = new Scanner(System.in);
String[] flowerPack = new String[5];
System.out.println(\"Welcome to my flower pack interface.\");
System.out.println(\"Please select a number from the options below\");
System.out.println(\"\");
while(true){
// Give the user a list of their options
System.out.println(\"1: Add an item to the pack.\");
System.out.println(\"2: Remove an item from the pack.\");
System.out.println(\"3: Sort the contents of the pack.\");
System.out.println(\"4: Search for a flower.\");
System.out.println(\"5: Display the flowers in the pack.\");
System.out.println(\"0: Exit the flower pack interfact.\");
// Get the user input
int userChoice = input.nextInt();
switch(userChoice){
case 1:
addFlower(flowerPack);
break;
case 2:
removeFlower(flowerPack);
break;
case 3:
sortFlowers(flowerPack);
break;
case 4:
searchFlowers(flowerPack);
break;
case 5:
displayFlowers(flowerPack);
break;
case 0:
System.out.println(\"Thank you for using the flower pack interface. See you again soon!\");
System.exit(0);
}
}
}
private void addFlower(String flowerPack[]) {
// TODO: Add a flower that is specified by the user
Scanner input = new Scanner(System.in);
String flower;
int position = 0;
System.out.println(\"Enter flower to add: \");
flower = input.next();
for(int i = 0; i < flowerPack.length; i++){
if(flowerPack[i] != null) {
position++;
if(position == flowerPack.length) {
System.out.println(\"Pack is full\");
}
} else {
flowerPack[i] = flower;
break;
}
}
//input.close();
}
private void removeFlower(String flowerPack[]) {
// TODO: Remove a flower that is specified by the user
Scanner input = new Scanner(System.in);
System.out.println(\"What flower remove? \");
String flower = input.next();
for(int i = 0; i < flowerPack.length; i++){
if(flowerPack[i] != null && flowerPack[i].equals(flower))
flowerPack[i] = \"null\";
}
}
Solution
import java.util.Scanner;
public class Flowers {
public static void main(String[] args){
new Flowers ();
}
// This will act as our program switchboard
public Flowers (){
Scanner input = new Scanner(System.in);
String[] flowerPack = new String[5];
System.out.println(\"Welcome to my flower pack interface.\");
System.out.println(\"Please select a number from the options below\");
System.out.println(\"\");
while(true){
// Give the user a list of their options
System.out.println(\"1: Add an item to the pack.\");
System.out.println(\"2: Remove an item from the pack.\");
System.out.println(\"3: Sort the contents of the pack.\");
System.out.println(\"4: Search for a flower.\");
System.out.println(\"5: Display the flowers in the pack.\");
System.out.println(\"0: Exit the flower pack interfact.\");
// Get the user input
int userChoice = input.nextInt();
switch(userChoice){
case 1:
addFlower(flowerPack);
break;
case 2:
removeFlower(flowerPack);
break;
case 3:
sortFlowers(flowerPack);
break;
case 4:
searchFlowers(flowerPack);
break;
case 5:
displayFlowers(flowerPack);
break;
case 0:
System.out.println(\"Thank you for using the flower pack interface. See you again soon!\");
System.exit(0);
}
}
}
// you need to edit your addFlower() method
private void addFlower(String flowerPack[]) {
// TODO: Add a flower that is specified by the user
Scanner input = new Scanner(System.in);
String flower;
// you dont need to write position variable
//int position = 0;
System.out.println(\"Enter flower to add: \");
// next() method only read till the space
//flower = input.next();
// nextLine() read until the end of the line \\0, so always use nextLine()
flower = input.nextLine();
for(int i = 0; i < flowerPack.length; i++){
// here we check the string flowerPack,if it\'s null then add flower to flowerPack string
if(flowerPack[i] == null) {
flowerPack[i]=flower;
// here you need to break statement when if condition is completed then go to the for loop to increment i and check the condition
break;
} //if completed
// here checks if integer i is equal to the flowerPack length-1 and flowerPack is not equal to null then pack is full
else if(i==flowerPack[i].length-1 && flowerPack[i] != null) {
System.out.println(\"Pack is full\");
break;
} // if completed
} // for loop completed
} // method closing bracket
// here you also need to edit removeFlower() method
private void removeFlower(String flowerPack[]) {
// TODO: Remove a flower that is specified by the user
Scanner input = new Scanner(System.in);
System.out.println(\"What flower remove? \");
String flower = input.nextLine();
for(int i = 0; i < flowerPack.length; i++){
if(flowerPack[i] != null && flowerPack[i].equals(flower))
flowerPack[i] = \"null\";
//you need to break statement
break;
}
// you need to write else also
else {
System.out.println(\"flower not found in the pack\");
break;
} // closing else
} // closing for loop
} // closing removeFlower() method
// now these methods are add and remove flower correctly
