Java Hashset Pro

Find maximum element of Java Array List

import java.util.ArrayList;

import java.util.Collections; 

public class FindMaximumOfArrayListExample

{

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.max(arrayList);

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

    }

}

Find maximum element of Java Hash Set

import java.util.HashSet;

import java.util.Collections;  

public class FindMaximumOfHashSetExample

{

 public static void main(String[] args)

{

HashSet hashSet = new HashSet();

hashSet.add(new Long("923740927"));

hashSet.add(new Long("4298748382"));

hashSet.add(new Long("2374324832"));

hashSet.add(new Long("2473483643"));

hashSet.add(new Long("32987432984"));

Object obj = Collections.max(hashSet);

System.out.println("Maximum Element of Java HashSet is : " + obj);

   }

}

Find maximum element of Java Vector

import java.util.Vector;

import java.util.Collections;

public class FindMaximumOfVectorExample

{

public static void main(String[] args)

{

Vector v = new Vector();

v.add(new Double("324.4324"));

v.add(new Double("345.3532"));

v.add(new Double("342.342"));

v.add(new Double("357.349"));

v.add(new Double("23.32453"));

Object obj = Collections.max(v);

System.out.println("Maximum Element of Java Vector is : " + obj);

   }

}

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());

   }

}

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 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());

  }

}