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- import java.util.*;
- class ListDemo
- {
- public static void main(String as[])
- {
- ArrayList list =new ArrayList();
- list.add(123);
- list.add(42.26);
- list.add("Hello");
- list.add(true);
- list.add("Hello");
- list.add(12.56);
- System.out.println("The list is : "+list);
- System.out.println("The length of list is : "+list.size());
- System.out.println("Is list is empty??? "+list.isEmpty());
- /*list.clear();
- System.out.println("Is list is empty??? "+list.isEmpty());*/
- System.out.println("Is list Contains Hello "+list.contains("Hello"));
- ArrayList list2=new ArrayList();
- list2.add("First");
- list2.add("Second");
- list2.add("Third");
- list2.add("Four");
- list2.add("Five");
- //list.add(list2);
- list.addAll(list2);
- System.out.println("Now,The list is : "+list);
- System.out.println("The length of list is : "+list.size());
- list.removeAll(list2);
- //list.retainAll(list2);
- System.out.println("Now,The list is : "+list);
- //list.set(3,"Java");
- list.add(3,"Java");
- System.out.println("Now,The list is : "+list);
- System.out.println("The 3rd element in list is : "+list.get(3));
- System.out.println("The 1st Hello in list is : "+list.indexOf("Hello"));
- System.out.println("The last Hello in list is : "+list.lastIndexOf("Hello"));
- for(int i=0;i<list.size();i++)
- {System.out.println("The element : "+i+" is "+list.get(i));}
- /*Object ob[]=list.toArray();
- for(int i=0;i<list.size();i++)
- {System.out.println("The element : "+i+" is "+ob[i]);}*/
- /*Iterator it=list.iterator();
- while(it.hasNext())
- {
- System.out.println("The element : is "+it.next());
- }*/
- }
- }
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