Using values of String array for using in an if statement

Question

In this case, if the user enters any one of the values available in the array fruits, I want the if statement to come true, however I don't understand how to accomplish that.

import java.util.Scanner;

public class Strings {

public static void main(String[] args) {


Scanner Scan = new Scanner(System.in);
String[] fruits = {"Apple", "apple", "Banana", "banana", "Orange", "orange"};

System.out.println("Enter a name of a fruit: ");
String input = Scan.nextLine();
if(/*input = any one of the values in Array fruits*/){
    System.out.println("Yes, that's a fruit");
        }
else{
    System.out.println("No, that's not a fruit.");
}

possible duplicate of In Java, how can I test if an Array contains a certain value? — Erik
– Erik, Commented Jan 9, 2015 at 12:54
You need a loop to traverse in the array searching for user input if it matches — user2575725
– user2575725, Commented Jan 9, 2015 at 12:56
Thanks everyone, I got it to work using Arrays.asList(fruits).contains(input) as Parth suggested. I have no idea how it works, since I've just started learning Java, but it works. — Daki
– Daki, Commented Jan 9, 2015 at 13:06

Mureinik · Accepted Answer · 2015-01-09 12:58:48Z

1

The easiest way to accomplish this is to convert the array to a List an use the contains method:

List<String> fruits =
    Arrays.asList("Apple", "apple", "Banana", "banana", "Orange", "orange");

System.out.println("Enter a name of a fruit: ");
String input = Scan.nextLine();
if(fruits.contains(input) {
    System.out.println("Yes, that's a fruit");
        }
else{
    System.out.println("No, that's not a fruit.");
}

However, this will probably have pretty lousy performance. Converting it to a HashSet should take care of that:

Set<String> fruits = 
    new HashSet<>(Arrays.asList("Apple", "apple", "Banana", "banana", "Orange", "orange"));
// rest of the code unchanged

answered Jan 9, 2015 at 12:58

Mureinik

316k54 gold badges400 silver badges405 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Using values of String array for using in an if statement

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related