Just read the API for ArrayList. The methods are quite clear. If you don't understand Collections at all, there is a lot of info here: Java Collections Framework

okay thanks
I will read em

before you move to the API i guess you need to really get a hold on what an array is, if i may put it in any way an array is just a contiguous memory for similar data types and almost all programming languages support array in java you have to declear an array using the SYNTAX;

datatype [] objectname;

where datatype may be any of the primitve data types or an object,

eg;

int [] x;
String [] name;

the next thing is for you to initilize the size of the array after which these is done with the syntax

objectname= new [integer_value_of size];
eg.

x= new int[10];
name= new String [25];

you can now assing a value to each index in the array

x[0]=34;
x[1]=45;
x[2]=19;
x[3]=49;
x[4]=38;

NOTE :-the index goes from 0 to n-1, n which is the size of the array itself can not be used

if you don't understand the question, don't try to answer. Array != ArrayList as you would have known had you read the documentation (but then, you tell people they shouldn't read the documentation and you clearly have followed your own advise...).