what is an arraylist code example
Example 1: what is arraylist
Size is dynamic
Only supports objects
not syncronized
array based class
Example 2: arraylist
ArrayList<String>arrayList=new ArrayList<>();
Example 3: arraylist of arraylist
public static void main(String[] args) {
ArrayList<ArrayList<Integer>> outer = new ArrayList<ArrayList<Integer>>();
ArrayList<Integer> inner = new ArrayList<Integer>();
inner.add(100);
inner.add(200);
outer.add(inner);
inner = new ArrayList<Integer>(inner);
outer.add(inner);
outer.get(0).add(300);
System.out.println(outer);
}
Example 4: arraylist in java
Size is dynamic
Only supports objects
not syncronized
array based class