Example usage for java.util ArrayList ArrayList

Introduction

In this page you can find the example usage for java.util ArrayList ArrayList.

Prototype

public ArrayList(Collection<? extends E> c)

Source Link

Document

Constructs a list containing the elements of the specified collection, in the order they are returned by the collection's iterator.

Usage

From source file:Main.java

public static void main(String[] args) {

    ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

    arrlist.add(15);/* ww w  .  j  a  v a  2 s  .  co m*/
    arrlist.add(20);
    arrlist.add(25);

    System.out.println(arrlist);
}

From source file:Main.java

public static void main(String args[]) {

    ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

    arrlist.add(10);//  www  .  java  2  s  .  co m
    arrlist.add(50);
    arrlist.add(30);

    arrlist.ensureCapacity(5000);

}

From source file:Main.java

public static void main(String args[]) {
    ArrayList<Integer> arrlist = new ArrayList<Integer>(10);

    arrlist.add(1);/*from   ww w . j a va 2  s  . c o  m*/
    arrlist.add(2);
    arrlist.add(3);
    arrlist.add(4);
    arrlist.add(5);

    System.out.println(arrlist);

}

From source file:Main.java

public static void main(String[] args) {

    ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

    arrlist.add(15);//from  w ww.j av  a 2s  .c om
    arrlist.add(2);
    arrlist.add(2);
    arrlist.add(2);

    int retval = arrlist.size();
    System.out.println("Size of list = " + retval);
}

From source file:Main.java

public static void main(String[] args) {

    ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

    arrlist.add(25);/*  w ww.j a va 2s . c  o  m*/

    boolean retval = arrlist.isEmpty();
    if (retval == true) {
        System.out.println("list is empty");
    } else {
        System.out.println("list is not empty");
    }

}

From source file:Main.java

public static void main(String[] args) {

    ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

    arrlist.add(15);//from w  ww. j  ava2s.  c o  m
    arrlist.add(22);
    arrlist.add(30);
    arrlist.add(40);

    // adding element 25 at third position
    arrlist.add(2, 25);

    System.out.println(arrlist);
}

From source file:Main.java

public static void main(String[] args) {
    ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

    arrlist.add(15);//ww  w .j a va  2  s . co m
    arrlist.add(22);
    arrlist.add(30);
    arrlist.add(40);

    System.out.println(arrlist);

    // retrieves element at 4th postion

    int retval = arrlist.get(3);

    System.out.println("Retrieved element is = " + retval);
}

From source file:Main.java

public static void main(String[] args) {

    ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

    arrlist.add(1);//from w  w  w.j  av a  2s .  co m
    arrlist.add(2);
    arrlist.add(2);
    arrlist.add(2);

    System.out.println(arrlist);

    // change element to 55 at 3rd position
    arrlist.set(2, 55);

    System.out.println(arrlist);
}

From source file:Main.java

public static void main(String[] args) {

    ArrayList<String> arrlist = new ArrayList<String>(5);

    arrlist.add("G");
    arrlist.add("E");
    arrlist.add("F");
    arrlist.add("M");
    arrlist.add("from java2s.com");

    System.out.println("Size of list: " + arrlist.size());

    System.out.println(arrlist);/*from w  w  w .  j a  va2  s  .c o  m*/

    // retrieving the index of element "E"
    int retval = arrlist.indexOf("E");
    System.out.println("The element E is at index " + retval);
}

From source file:Main.java

public static void main(String[] args) {

    ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

    arrlist.add(20);//from   w  ww  .j  ava 2s. c  om
    arrlist.add(15);
    arrlist.add(30);
    arrlist.add(45);

    System.out.println("Size of list: " + arrlist.size());
    System.out.println(arrlist);

    arrlist.remove(2);

    System.out.println("Size of list: " + arrlist.size());
    System.out.println(arrlist);

}