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Containerizing Java applications
Containerization is a Java embedded process, which is able to pack the Java service or an application within a software container class. It includes every component which needs to execute the process within the packet. Containerized Java applications have lots of benefits with −
Granullar stability − It makes the content more stable and easily scale up the value of the content.
Flexibility − It develops the flexibility to enhance the experiment process.
Resilience − Helps to avoid the cascading failure of an application.
Cost − As the process is the embedded one, so the cost is low.
Algorithm to Perform Containerizing Java Applications
In this possible algorithm, we are going to show you how to perform the process of containerizing method in the Java applications. By using this, we will built some Java syntax further.
Step 1 − Start the process.
Step 2 − Declare and import some Java packages.
Step 3 − Declare a string argument.
Step 4 − Declare an array list.
Step 5 − Populate the list with some elements.
Step 6 − Illustrate the copy construction.
Step 7 − Illustrate the assignment using a copy() method.
Step 8 − Clone the value in another array list.
Step 9 − Get the return value.
Step 10 − Terminate the process.
Syntax to Containerizing Java Applications
Array array1 = new Array();
array1.add( "ape" );
array1.add( "bat" );
array1.add( "cat" );
Array array2 = new Array();
array2.add( "red" );
array2.add( "blue" );
System.out.println( "array1 = " + array1 + ", array2 = " + array2 );
array1.swap( array2 );
System.out.println( "array1 = " + array1 + ", array2 = " + array2 );
Array Array = new Array();
Array.add( new Integer( 2 ) );
Containerizing Java applications
Array.add( new Boolean( false ) );
Array.add( new Character( 'x' ) );
Array.add( new Float( 3.14F ) );
System.out.println( "Array = " + Array );
public class Company{
String myName;
public Company( String name ){
myName = name;
}
public String toString(){
return "Company( " + myName + " )";
}
public int hashCode(){
return myName.hashCode();
}
public boolean equals( Object object ){
return
object instanceof Company
&& myName.equals( ( (Company)object ).myName );
}
}
In this possible syntax above, we have tried to show you how to create a containerizing class with a Java application. By following this syntax, we will built some Java codes to discuss the problem statement in a broad manner.
Approaches to Follow
Approach 1 − Java program to demonstrate the working of containerized application with ArrayList, Linked List and Vector
Approach 2 − Java program to demonstrate the working of the containerized application with Stack, priority queue and ArrayDeque class
Approach 1
Use of ArrayList, Linked List and Vector With Containerized Application.
Use of Containerized Application ArrayList
In this possible approach, we are going to apply an array list to demonstrate the working of the containerized application in a Java environment. Here is the possible syntax −
public class HelloWorld {
public static void main(String[] args){
Array array1 = new Array();
array1.add( "DATA" );
array1.add( "DATA" );
array1.add( "DATA" );
System.out.println( "array1 = " + array1 );
System.out.println("Welcome to our application");
}
}
Example
//Java program to demonstrate the working of containerized application ArrayList
import java.io.*;
import java.util.*;
public class ARBRDD {
public static void main(String[] args){
ArrayList<Integer> al = new ArrayList<Integer>();
for (int i = 1; i <= 5; i++)
al.add(i);
System.out.println(al);
al.remove(3);
System.out.println(al);
for (int i = 0; i < al.size(); i++)
System.out.print(al.get(i) + " ");
}
}
Output
[1, 2, 3, 4, 5] [1, 2, 3, 5] 1 2 3 5
Use of Containerized Application LinkedList
In this possible approach, we are going to apply a linked list to demonstrate the working of the containerized application in a Java environment.
Example
//Java program to demonstrate the working of the containerized application with LinkedList
import java.io.*;
import java.util.*;
public class ARBRDD {
public static void main(String[] args){
LinkedList<Integer> ll = new LinkedList<Integer>();
for (int i = 1; i <= 5; i++)
ll.add(i);
System.out.println(ll);
ll.remove(3);
System.out.println(ll);
for (int i = 0; i < ll.size(); i++)
System.out.print(ll.get(i) + " ");
}
}
Output
[1, 2, 3, 4, 5] [1, 2, 3, 5] 1 2 3 5
Use of Containerized Application Vector List
In this possible approach, we are going to apply a vector list to demonstrate the working of the containerized application in a Java environment.
Example
//Java program to demonstrate the working of the containerized application with Vector
import java.io.*;
import java.util.*;
public class ARBRDD {
public static void main(String[] args){
Vector<Integer> v = new Vector<Integer>();
for (int i = 1; i <= 5; i++)
v.add(i);
System.out.println(v);
v.remove(3);
System.out.println(v);
for (int i = 0; i < v.size(); i++)
System.out.print(v.get(i) + " ");
}
}
Output
[1, 2, 3, 4, 5] [1, 2, 3, 5] 1 2 3 5
Approach 2
Containerized Application With Stack, Priority Queue and ArrayDeque Class.
Use of the Stack Method
In this possible approach,we are going to apply the process of the containerized application with a stack , priority queue and ArrayDeque. Here is the syntax −
Array array1 = new Array(); array1.add( "triangle" ); array1.add( "square" ); array1.add( "pentagon" ); System.out.println( "array1 = " + array1 ); Array array2 = new Array( array1 ); System.out.println( "array2 = " + array2 ); System.out.println( "array1.equals( array2 ) = " + array1.equals( array2 )); Array array3 = new Array(); array3.add( "heptagon" ); array3.add( "octagon" ); System.out.println( "before copy, array3 = " + array3 ); array3.copy( array1 ); System.out.println( "after copy, array3 = " + array3 ); Array array4 = (Array) array1.clone(); System.out.println( "array4 = " + array4 );
Example 1
//Java program to demonstrate the working of the containerized application with Stack
import java.util.*;
public class ARBRDD {
public static void main(String args[]){
Stack<String> stack = new Stack<String>();
stack.push("{INDIA");
stack.push("KASHMIR");
stack.push("HIMACHAL}");
stack.push("{WEST BENGAL}");
Iterator<String> itr = stack.iterator();
while (itr.hasNext()) {
System.out.print(itr.next() + " ");
}
System.out.println();
stack.pop();
itr = stack.iterator();
while (itr.hasNext()) {
System.out.print(itr.next() + " ");
}
}
}
Output
{INDIA KASHMIR HIMACHAL} {WEST BENGAL}
{INDIA KASHMIR HIMACHAL}
Example 2
//Java program to demonstrate the working of priority queue in Java
import java.util.*;
public class ARBRDD {
public static void main(String args[]){
PriorityQueue<Integer> pQueue = new PriorityQueue<Integer>();
pQueue.add(10);
pQueue.add(20);
pQueue.add(15);
System.out.println(pQueue.peek());
System.out.println(pQueue.poll());
System.out.println(pQueue.peek());
}
}
Output
10 10 15
Example 3
//Java program to demonstrate the ArrayDeque class to demonstrate the working of the containerized application
import java.util.*;
public class ARBRDD {
public static void main(String[] args){
ArrayDeque<Integer> de_que = new ArrayDeque<Integer>(10);
de_que.add(10);
de_que.add(20);
de_que.add(30);
de_que.add(40);
de_que.add(50);
System.out.println(de_que);
de_que.clear();
de_que.addFirst(564);
de_que.addFirst(291);
de_que.addLast(24);
de_que.addLast(14);
System.out.println(de_que);
}
}
Output
[10, 20, 30, 40, 50] [291, 564, 24, 14]
Conclusion
The process of containerization means that both technology and teams can be divided into some smaller sizes. When it comes often with the one or two teams which is responsible for the production, deployment, scalability issues, performance downtime, etc. In this article today, we have learned about the containerization method. By using the above mentioned syntax and algorithm we have built some Java codes to explain the problem statement in an efficient manner.
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