How to compare a hashSet within a foreach loop iterating through another hashSet Java

I'm running a test to see if the values I've inputed into a file are the same values I generate from my API. So I have actual values which are generated from my API and I have another list of expected values. The problem I have is that I am not able to make apple to apple comparisons.

Example:

Actual = {red, bleu, yellow, purple}
expected = {bleu, red, purple, yellow}

failure: red != bleu, bleu != red, yellow != purple, purple != yellow

I'm not sure how else to better describe what I'm saying other than showing you my code.

Here is my code:

TreeSet<String> hashSet = (TreeSet<String>) calcGraph.getInputs();
boolean success = true;
String error="";

for(String xpath : hashSet) {

    String actual = someApi(response, expression, xpath);

    for ( String values : data.getDataOutputs().keySet() ) {
        String expected = data.getDataOutputs().get(expectedXpath);

        if ( !expected.equals(actual)) {
            error+= "\nExpected : " + expected +"\nActual: " +actual+"\n";
            success = false;
        } if ( !success ) Assert.fail(error);

    }
}

How can I compare these lists within 1 foreach loop or equivalent? Any help or assistance would be appreciated.

Edit:

            Iterator<String> expectation = expectedList.iterator();
            Iterator<String> actuation = actualList.iterator();

            while((expectation.hasNext()) && (actuation.hasNext())) {

                String exp = expectation.next();
                String act = actuation.next();

                logger.info("Expected: "+exp);
                logger.info("Actual: "+act);

                // Validation check
                if ( !exp.equals(act)) {
                    error+= "\nExpected : " + exp +"\nActual: " +act+"\n";
                    success = false;
                } if ( !success ) Assert.fail(error);
            }

Order matters, so this will fail...

Solution

You can use

Set.contains(value)

to check if an actual value is in expected value, you only need one for loop to achieve this

See this

http://docs.oracle.com/javase/7/docs/api/java/util/Set.html#contains(java.lang.Object)