How to convert arraylist array into integer array in java

Import? Java . util . ArrayList；

Public? Class? JavaArrayList{？

Public? Static electricity Invalid? main(String[]args)？

{//Initialization of Java Dynamic Array

Array list? al=new？ ArrayList()；

//Add the data al.add(a) to the Java dynamic array; al . add(b)； al . add(c)； //output Java dynamic array

for(int？ I = 0； I & ltal. size (); i++)？

String? alEach =(String)al . get(I)；

system . out . println(alEach)； ?

}//Delete one element in the array and delete the second element.

al . remove( 1)；

//Modify the Java dynamic array and put the new elements in the second position.

al.add( 1，2)；

//output Java dynamic array