how to find the index of an element by value in java array

/**
 * @author lautturi.com 
 * Java example:  find the index of an element in an array
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {

		String[] strArray = { "java", "python", "perl", "js", "perl", "c", "go" };
		String find = "js";
		int idx = -1;
		for (int i = 0; i < strArray.length; i++) {

			if (strArray[i] == find) {
				idx = i;
				break;
			}
		}
		if (idx == -1) {
			System.out.println("the element is not found");
		} else {
			System.out.println("The index of element is " + idx);
		}
	}
}