ArrayListDemo.java

Friday, 29 July 2011 05:32

package questions;

import java.util.*;
/**
* @author Bharat Verma
*/
public class ArrayListDemo
{
public static void printArrayList (ArrayList p_arraylist)
{
System.out.println("------------------------------------------");
System.out.println("Content of ArrayList : "+p_arraylist);
System.out.println("Size of ArrayList = "+p_arraylist.size());
System.out.println("------------------------------------------");
}
public static void main(String[] args)
{
ArrayList sampleArrayList =new ArrayList(); // you can specify the object type

Integer intr = new Integer(729);
String str ="Bharat";
double dtr = 169.721;

printArrayList(sampleArrayList);

sampleArrayList.add(intr);
sampleArrayList.add(str);
sampleArrayList.add(dtr);

printArrayList(sampleArrayList);

Integer i5=new Integer(50);
sampleArrayList.add(3, i5); // using add(int index, object obj)

printArrayList(sampleArrayList);

sampleArrayList.remove(3); // using remove()

printArrayList(sampleArrayList);

Object a=sampleArrayList.clone(); // using clone

System.out.println("The clone is: " + a);

printArrayList(sampleArrayList);

// iteration using iterator
Iterator iter = sampleArrayList.iterator();
System.out.println("Using Iterator");
while (iter.hasNext())
{
System.out.println(iter.next());
}

// using for loop and indexes
System.out.println("Using for loop and index");
for (int i=0; i {
System.out.println(sampleArrayList.get(i));
}
}
}