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Main.java
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76 lines (58 loc) · 2.83 KB
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import java.util.Scanner;
import java.util.ArrayList;
import java.util.concurrent.TimeUnit;
class Main {
public static void main(String[] args) throws InterruptedException {
Scanner input = new Scanner(System.in);
ArrayList<String> items = new ArrayList<String>();
System.out.println("Commands:");
System.out.println("add - Adds an item to the database.");
System.out.println("remove - Removes an item from the database.");
System.out.println("change - Changes an item in the database.");
System.out.println("clear - Removes all items from the database.");
System.out.println("list - Lists all items in the database.");
System.out.println("quit - Stops the program.");
while (true) {
System.out.println("Enter a command:");
String inputResult = input.nextLine();
if (inputResult.equals("add")) { // add
System.out.println("Enter some text to add:");
String addInputResult = input.nextLine();
items.add(addInputResult);
System.out.println(addInputResult + " has been added to the database.");
TimeUnit.SECONDS.sleep(1);
} else if (inputResult.equals("remove")) { // remove
System.out.println("Enter an item you would like to remove:");
String removeInputResult = input.nextLine();
items.remove(removeInputResult);
System.out.println(removeInputResult + " has been removed from the database.");
TimeUnit.SECONDS.sleep(1);
} else if (inputResult.equals("change")) { // change
System.out.println("Enter an item you would like to change:");
String itemToChange = input.nextLine();
System.out.println("Enter its new name:");
String newItemName = input.nextLine();
int oldItemIndex = items.indexOf(itemToChange);
items.remove(itemToChange);
items.add(oldItemIndex, newItemName);
System.out.println(itemToChange + " has been changed to " + newItemName + ".");
TimeUnit.SECONDS.sleep(1);
} else if (inputResult.equals("clear")) { // clear
items.clear();
System.out.println("The database has been cleared.");
TimeUnit.SECONDS.sleep(1);
} else if (inputResult.equals("list")) { // list
System.out.println("The items in the list are: " + items + ".");
TimeUnit.SECONDS.sleep(1);
} else if (inputResult.equals("quit")) { // quit
System.out.println("Exiting the program...");
TimeUnit.SECONDS.sleep(1);
break;
} else { // not a command
System.out.println("That isn't a command.");
TimeUnit.SECONDS.sleep(1);
}
}
input.close();
}
}