ArrayList

In this short Java tutorial I am going to share with you a few different ways you can use to iterate over a collection in Java. Iterating List with Enhanced For-Loop List<String> names = new ArrayList<>(); names.add(“Sergey”); names.add(“Bill”); names.add(“John”); for(String name: names) { System.out.println(name); } Iterating List with forEach() and Lambda List<String> names = new…

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In this short code example I am going to share with you how to concatenate two ArrayList in Java.  Concatenate ArrayList using addAll() function Let’s say we have these two ArrayList(s): List<String> itemsList1 = new ArrayList(Arrays.asList(“One”, “Two”)); List<String> itemsList2 = new ArrayList(Arrays.asList(“Three”, “Four”)); To concatenate the two lists together we can create a new ArrayList, and…

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