Download HeadFirstServlets Chapter - 3 Mini MVC Tutorial

Download the HeadFirstJava - Chapter-3 ..Mini MVC Tutorials..

The Continuous Download of the Chapter - 2.

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Struts Meterials from DURGA SOFT download.

• Architecture
• 2-tier Architecture
• 3-tier Architecture
• n-tier Architecture
• Web Application development models
• MODEL1 Based Web Applications
• MODEL2 Based Web Applications
• Struts Introduction
• ActionForm and Action Classes
• Struts Flow/Struts Architecture
• DesignPatterns
• MVC(Model View Controller)
• Singleton DesignPattern
• FrontController DesignPattern
• ApplicationController DesignPattern
• DataTransforObect/ValueObject DesigenPattern

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Example to find maxmimum element in a Vector

Example to find maximum element in a Vector

This java example shows how to find a maximum element of Java Vector using max method of Collections class.To find maximum element of Java Vector use, static Object max(Collection c) method of Collections class.

This method returns the maximum element of Java Vector according to its natural ordering.

    import java.util.Vector;
    import java.util.Collections;

    public class FindMaximumOfVectorExample {
     public static void main(String[] args) {

     //create a Vector object
     Vector v = new Vector();
     //Add elements to 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);

     }
    }

The Output is:

Maximum Element of Java Vector is : 357.349

Reference Books:

• Core Java : Advanced Features (Volume - 2) 8 Edition
• Core JavaServer Faces 3 Edition
• SCJP Sun Certified Programmer for Java 6 Study Exam 310
• Core JAVA : An Integrated Approach 1 Edition

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Example to Find maxmimum element in ArrayList

Example to Find maxmimum element in ArrayList

This java example shows how to find a maximum element of Java ArrayList using max method of Collections class.

To find maximum element of Java ArrayList use, static Object max(Collection c) method of Collections class.
This method returns the maximum element of Java ArrayList according to its natural ordering.

import java.util.ArrayList;
    import java.util.Collections;

    public class FindMaximumOfArrayListExample {

     public static void main(String[] args) {

     //create an ArrayList object
     ArrayList arrayList = new ArrayList();

     //Add elements to 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);

     }
    }

The Output :

Maximum Element of Java ArrayList is : 802348

Reference Books: 

• Core Java : Advanced Features (Volume - 2) 8 Edition
• Core JavaServer Faces 3 Edition
• SCJP Sun Certified Programmer for Java 6 Study Exam 310
• Core JAVA : An Integrated Approach 1 Edition

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Create a List containing n Copies of Specified Object

Create a List containing n Copies of Specified Object This java example shows how to create a list consisting n copies of specified copies using nCopies method of Collections class.

To create a List containing n copies of specified Object use static List nCopies(int n, Object obj) method of Java Collection class.This method returns immutable List containing n copies of the specified Object.

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Enumerate Vector using java.util.Enumeration

Enumerate through a Vector using Java Enumeration Example.This Java Example shows how to enumerate through elements of a Vector using Java Enumeration.

Enumeration provides two methods to enumerate through the elements. It's hasMoreElements method returns true if there are more elements to enumerate through otherwise it returns false. Its nextElement method returns the next element in enumeration.

static ArrayList list(Enumeration e) method of Collections class. This method returns the ArrayList containing the elements returned by specified Enumeration object in order they are returned.

    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) {
   //create a Vector object
   Vector v = new Vector();
   //Add elements to Vector

   v.add("A");
   v.add("B");
   v.add("D");
   v.add("E");
   v.add("F");
   
   System.out.println("Vector contains : " + v);
   //Get Enumeration over Vector
   Enumeration e = v.elements();
   //Create ArrayList from Enumeration of Vector
   ArrayList aList = Collections.list(e);
   System.out.println("Arraylist contains : " + aList);

  }
 }

Output is:

Vector Contains : [A, B, D, E, F]
Arraylist contains : [A, B, D, E, F]

Reference Books:

• Core JAVA : An Integrated Approach 1 Edition
• Core Java : Advanced Features (Volume - 2) 8 Edition
• Core JavaServer Faces 3 Edition

Read more..