how to define an arraylist code example

Example 1: how to define an arraylist in java

ArrayList integerArray = new ArrayList();
ArrayList integerArray = new ArrayList();
ArrayList integerArray = new ArrayList();
//... keep replacing what is inside the <> with the appropriate
//data type

Example 2: java how to create arraylist

import java.util.ArrayList;
//create ArrayList
ArrayList arrayList = new ArrayList();

Example 3: how to declare array of arraylist in java

List> group = new ArrayList>(4);