import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
public class List1
{
public static void main(String a[])
{
List<Integer> l1= new ArrayList<Integer>();
l1.add(21);
l1.add(2);
l1.add(54);
System.out.println( "total no of list elements:\n"+l1.size());
System.out.println(l1);
List<Integer> l2= new ArrayList<Integer>();
l2.add(211);
l2.add(211);
l2.add(5411);
System.out.println("Add the another collection in list\n");
l1.addAll(l2);
System.out.println( "After Addition of additional collection in List, Size of list:\n"+l1.size());
System.out.println(l1);
//l1.retainAll(l2);
System.out.println( "verify list contains additional collection \n");
if (l1.containsAll(l2))
System.out.println(true);
else
System.out.println(false);
System.out.println("sort the data of array\n");
Collections.sort(l1);
//clear the Element of the Array
//l1.clear();
System.out.println("Iterate the Element of List\n");
Iterator<Integer> i1=l1.iterator();
while(i1.hasNext())
{
System.out.println(i1.next());
}
System.out.println("list to Array Conversion\n");
Integer[] intArray=l1.toArray(new Integer[l1.size()]);
for (Integer i : intArray)
{
System.out.println(i);
}
System.out.println("Array to List Conversion\n");
List<Integer> listOfArray=Arrays.asList(intArray);
System.out.println(listOfArray);
}
}
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
public class List1
{
public static void main(String a[])
{
List<Integer> l1= new ArrayList<Integer>();
l1.add(21);
l1.add(2);
l1.add(54);
System.out.println( "total no of list elements:\n"+l1.size());
System.out.println(l1);
List<Integer> l2= new ArrayList<Integer>();
l2.add(211);
l2.add(211);
l2.add(5411);
System.out.println("Add the another collection in list\n");
l1.addAll(l2);
System.out.println( "After Addition of additional collection in List, Size of list:\n"+l1.size());
System.out.println(l1);
//l1.retainAll(l2);
System.out.println( "verify list contains additional collection \n");
if (l1.containsAll(l2))
System.out.println(true);
else
System.out.println(false);
System.out.println("sort the data of array\n");
Collections.sort(l1);
//clear the Element of the Array
//l1.clear();
System.out.println("Iterate the Element of List\n");
Iterator<Integer> i1=l1.iterator();
while(i1.hasNext())
{
System.out.println(i1.next());
}
System.out.println("list to Array Conversion\n");
Integer[] intArray=l1.toArray(new Integer[l1.size()]);
for (Integer i : intArray)
{
System.out.println(i);
}
System.out.println("Array to List Conversion\n");
List<Integer> listOfArray=Arrays.asList(intArray);
System.out.println(listOfArray);
}
}
---------------------------------------------------------------------------------------------------------------------
Output:
total no of list elements:
3
[21, 2, 54]
Add the another collection in list
After Addition of additional collection in List, Size of list:
6
[21, 2, 54, 211, 211, 5411]
verify list contains additional collection
true
sort the data of array
Iterate the Element of List
2
21
54
211
211
5411
list to Array Conversion
2
21
54
211
211
5411
Array to List Conversion
[2, 21, 54, 211, 211, 5411]
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