arraylist declaration in java code example

Example 1: how to define an arraylist in java

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

Example 2: how to make an arraylist java

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

Example 3: how to make a new arraylist java

ArrayList<Type> name = new ArrayList<Type>();

Example 4: java how to create arraylist

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

Example 5: java arraylist declaration

ArrayList<E> yourArray = new ArrayList<E>();

//'E' can be raplaced with any data type or object, or left as 
// E if used for general funcitonality

Example 6: how to declare array of arraylist in java

List<List<Individual>> group = new ArrayList<List<Individual>>(4);