How to find index of STRING array in Java from a given value?

Question

I wanted to know if there\'s a native method in array for Java to get the index of the table for a given value ?

Let\'s say my table contains these strings :

<

Answer 1

Testable mockable interafce

public interface IArrayUtility {

    int find(T[] list, T item);

}

implementation

public class ArrayUtility implements IArrayUtility {

    @Override
    public int find(T[] array, T search) {
        if(array == null || array.length == 0 || search == null) {
            return -1;
        }

        int position = 0;

        for(T item : array) {

            if(item.equals(search)) {
                return position;
            } else {
                ++position;
            }
        }

        return -1;
    }

}

Test

@Test
public void testArrayUtilityFindForExistentItemReturnsPosition() {
    // Arrange
    String search = "bus";
    String[] array = {"car", search, "motorbike"};

    // Act
    int position = arrayUtility.find(array, search);

    // Assert
    Assert.assertEquals(position, 1);
}