Search from ArrayList and output objects to be a new menu

Question

My code to search from ArrayList:

public void searchFromList() {
        String color;
        System.out.print("Input the color: ");
        Scanner scan = new Scanner(System.in);
        color = scan.nextLine();
        boolean test = false;
        for (Fruit fruit: fruits) {
            if (fruit.getcolor().equals(color)) {
                System.out.println(fruit);
                test = true;
            }
        }
        if (!test){
            System.out.println();
            System.out.println("Sorry there is no " + color + " fruit in list");
        }
    }

If input is "green", output will be:

01 Pear
03 Watermelon

How do I make the output be a menu like:

[1] 01 Pear
[2] 03 Watermelon
[3] Back to Menu

Thank you! This is not an assignment, please feel free to give advice!

Scary Wombat · Accepted Answer · 2022-08-17 05:53:01Z

2

Rather than a for-each loop, use an iterated loop and the use iterator as part of the output.

for (int i = 1; i <= fruits.length; i++) {
    Fruit fruit = fruits[i - 1];
    // including your stuff
    System.out.printf ("[%d] %s%n", i, fruit);
    
}

not tested or even compiled

answered Aug 17, 2022 at 5:53

Scary Wombat

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2 Comments

Scary Wombat Over a year ago

As i is used for printing with 1 being added to it, I decided to do it this way for the OP to understand. Probably for myself, I would index from 0 though.

mighty_dev Over a year ago

Ok, fair enough.

Maarouf Yassine · Accepted Answer · 2022-08-17 07:24:45Z

You can add a counter to check the number of fruits found, and then use this counter to construct the menu form.

Your code would be like this:

public void searchFromList() {
        String color;
        System.out.print("Input the color: ");
        Scanner scan = new Scanner(System.in);
        color = scan.nextLine();
        boolean test = false;
        // Add Menu Item Counter Here
        int itemCount = 0;
        for (Fruit fruit: fruits) {
            if (fruit.getcolor().equals(color)) {
                System.out.println("[" + ++itemCount + "]" + fruit);
                test = true;
            }
        }
        if (!test){
            System.out.println();
            System.out.println("Sorry there is no " + color + " fruit in list");
        }
        // Print Menu Item Here
        System.out.println("[" + ++itemCount + "] Back To Menu");
    }

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