Java - search a string in string array [duplicate]

Question

In java do we have any method to find that a particular string is part of string array. I can do in a loop which I would like to avoid.

e.g.

String [] array = {"AA","BB","CC" };
string x = "BB"

I would like a

if (some condition to tell whether x is part of array) {
      do something
   } else {
     do something else
   }

Answer 1

Do something like:

Arrays.asList(array).contains(x);

since that return true if the String x is present in the array (now converted into a list...)

Example:

if(Arrays.asList(myArray).contains(x)){
    // is present ... :)
}

---

since Java8 there is a way using streams to find that:

boolean found = Arrays.stream(myArray).anyMatch(x::equals);
if(found){
    // is present ... :)
}

Answer 2

You could also use the commons-lang library from Apache which provides the much appreciated method contains.

import org.apache.commons.lang.ArrayUtils;

public class CommonsLangContainsDemo {

    public static void execute(String[] strings, String searchString) {
        if (ArrayUtils.contains(strings, searchString)) {
            System.out.println("contains.");
        } else {
            System.out.println("does not contain.");
        }
    }

    public static void main(String[] args) {
        execute(new String[] { "AA","BB","CC" }, "BB");
    }

}