To create an array list in Java, you declare an ArrayList variable and call the ArrayList constructor to instantiate an ArrayList object and assign it to the variable : ArrayList friends = new ArrayList(); You can optionally specific a capacity in the ArrayList constructor: ArrayList friends = new ArrayList(100);
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To add an object to the ArrayList, we call the add() method on the ArrayList, passing a pointer to the object we want to store . This code adds pointers to three String objects to the ArrayList… list. add( “Easy” ); // Add three strings to the ArrayList list.
Read moreHow do you add an element to a list in Java?
There are two methods to add elements to the list.
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