Java Array List Pro

Perform Binary Search on Java Array List

import java.util.ArrayList;

import java.util.Collections;

public class BinarySearchArrayListExample

{

 public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add("1");

arrayList.add("4");

arrayList.add("2");

arrayList.add("5");

arrayList.add("3");

Collections.sort(arrayList);

System.out.println("Sorted ArrayList contains : " + arrayList);

int index = Collections.binarySearch(arrayList,"4");

System.out.println("Element found at : " + index);

    }

}

Replace all occurrences of specified element of Java Array List

import java.util.ArrayList;

import java.util.Collections;

public class ReplaceAllArrayListExample

{

public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add("A");

arrayList.add("B");

arrayList.add("A");

arrayList.add("C");

arrayList.add("D");

System.out.println("ArrayList Contains : " + arrayList);

Collections.replaceAll(arrayList, "A","Replace All");

System.out.println("After Replace All, ArrayList Contains : " + arrayList);

    }

}

import java.util.ArrayList;

import java.util.Collections;

public class SwapElementsOfArrayListExample

{

public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add("A");

arrayList.add("B");

arrayList.add("C");

arrayList.add("D");

arrayList.add("E");

System.out.println("Before swaping, ArrayList contains : " + arrayList);

Collections.swap(arrayList,0,4);

System.out.println("After swaping, ArrayList contains : " + arrayList);

     }

} 

Find Minimum element of Java Array List

import java.util.ArrayList;

import java.util.Collections;

public class FindMinimumOfArrayListExample

{

public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add(new Integer("327482"));

arrayList.add(new Integer("13408"));

arrayList.add(new Integer("802348"));

arrayList.add(new Integer("345308"));

arrayList.add(new Integer("509324"));

Object obj = Collections.min(arrayList);

System.out.println("Minimum Element of Java ArrayList is : " + obj);

   }

}

Get Enumeration over Java Vector

import java.util.Enumeration;

import java.util.Vector;

import java.util.Collections;

public class GetEnumerationOverVectorExample

{

public static void main(String[] args)

{

Vector v = new Vector();

v.add("A");

v.add("B");

v.add("D");

v.add("E");

v.add("F");

Enumeration e = Collections.enumeration(v);

System.out.println("Enumerating through Java Vector");

while(e.hasMoreElements())

System.out.println(e.nextElement());

   }

}

Get Enumeration over Java Hash Set

import java.util.Enumeration;

import java.util.HashSet;

import java.util.Collections;

public class GetEnumerationOverHashSetExample

{

public static void main(String[] args)

{

HashSet hashSet = new HashSet();

hashSet.add("A");

hashSet.add("B");

hashSet.add("D");

hashSet.add("E");

hashSet.add("F");

Enumeration e = Collections.enumeration(hashSet);

System.out.println("Enumerating through Java HashSet");

while(e.hasMoreElements())

System.out.println(e.nextElement());

   }

}

Get Enumeration over Java Array List

import java.util.Enumeration;

import java.util.ArrayList;

import java.util.Collections; 

public class GetEnumerationOverArrayListExample

{

 public static void main(String[] args)

{

ArrayList arrayList = new ArrayList();

arrayList.add("A");

arrayList.add("B");

arrayList.add("D");

arrayList.add("E");

arrayList.add("F");

Enumeration e = Collections.enumeration(arrayList);

System.out.println("Enumerating through Java ArrayList");

while(e.hasMoreElements())

System.out.println(e.nextElement());

    }

}

Enumerate through a Vector using Java Enumeration

import java.util.Vector;

import java.util.Enumeration; 

public class EnumerateThroughVectorExample

{

public static void main(String[] args)

{

Vector v = new Vector();

v.add("One");

v.add("Two");

v.add("Three");

v.add("Four");

Enumeration e = v.elements();

System.out.println("Elements of the Vector are : ");

while(e.hasMoreElements())

System.out.println(e.nextElement());

   }

}

Create Java Array List From Enumeration

import java.util.ArrayList;

import java.util.Collections;

import java.util.Enumeration;

import java.util.Vector;   

public class CreateArrayListFromEnumerationExample

{

public static void main(String[] args)

{

Vector v = new Vector();

v.add("A");

v.add("B");

v.add("D");

v.add("E");

v.add("F");

System.out.println("Vector contains : " + v);  Enumeration e = v.elements();

ArrayList aList = Collections.list(e);

System.out.println("Arraylist contains : " + aList);

    }

}