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javaarrayssearchsequential

sequential search in a string array issues


Relatively new to java. I'm trying to sequentially search in a string array but I'm pretty sure there's something wrong with my if statement because the boolean flag stays false. The code worked with the int array, so I don't understand what's wrong with this one.

public static void sequentialNameSearch(String[] array) {
    // sequential name search
    Scanner input = new Scanner(System.in);
    String value;
    int index = 0;
    boolean flag = false;
    System.out.println("\nPlease enter a name to search for");
    value = input.next();

    while (flag == false && index < array.length - 1) {
        if (array[index] == value) {
            flag = true;
            System.out.println(array[index] + " is number "
                + (index + 1) + " in the array.");
        }
        else if (index == array.length - 1)
            System.out.println("That name is not in the array");

        index++;
    }

    input.close();
}

Solution

  • What's wrong is that you can't compare the contents of two Strings with ==. For that, you should use equals() or equalsIgnoreCase() methods of one of the strings. Example:

    if (array[index].equals(value)) {