Collections in Java

@Test
public void testCollections()
{
LinkedList<Integer>list=new LinkedList<Integer>();
list.add(10);
list.addFirst(5);
list.addLast(20);
System.out.println(“Contents of Linkedlist are”);
for(int i:list)
{
System.out.println(i);
}

TreeSet<Integer> set=new TreeSet<Integer>();
set.add(10);
set.add(20);
Iterator itr=set.iterator();
System.out.println(“Contents of Set are”);
while(itr.hasNext())
{
System.out.println(itr.next());
}

Stack<Integer> stack=new Stack<Integer>();
stack.push(10);
stack.push(20);
System.out.println(“Contents of Stack are”);
while(!stack.isEmpty())
{
System.out.println(stack.pop());

}

Queue queue=new LinkedList<Integer>();
queue.add(10);
queue.add(20);
System.out.println(“Contents of Queue are”);
while(!queue.isEmpty())
{
System.out.println(queue.poll());
}

}

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About qainterviews

Software Geek,QA Expert,Blogger
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