Thursday, April 9, 2015

Java 8 with lambda expression to print elements on screen

Goal
Using Java 8 and its new feature Lambdas lets print each element of List to screen.

Setup
We will start with following code and fill in to a piece of logic to push elements on console.

@Test
    public void SimpleCollection() {
        List values = Arrays.asList(1, 2, 3, 4, 5, 6);

        values.forEach(/* fill with lambda expression */);

    }

Goal
We will a lambda expression e -> {/** code block **/} to manage the output logic. Something like this
value -> {
            System.out.println(value);
        }

The complete solution looks like following

@Test
    public void SimpleCollection() {
        List values = Arrays.asList(1, 2, 3, 4, 5, 6);

        values.forEach(value -> {
            System.out.println(value);
        });

    }

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