Saturday, June 9, 2018

Puppet

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Thursday, March 1, 2018

Java Program to check whether given word is Palindrome or not


This post will explain us, how to implement palindrome logic with different ways, using java.

public class WordPalindrome {
  public static void main(String[] args) {
   String word="LIRIL";
   boolean isPalin = isPalindromeOne(word);
   if(isPalin){
    System.out.println("Given word ["+word+"] is palindrome");
   }else{
    System.out.println("Given word ["+word+"] is not palindrome");
   }
   word = "Hello";
   isPalin = isPalindromeOne(word);
   if(isPalin){
    System.out.println("Given word ["+word+"] is palindrome");
   }else{
    System.out.println("Given word ["+word+"] is not palindrome");
   }
   
  }


  public static boolean isPalindromeOne(String word){
   boolean isPalindrome = false;
   //first way of checking
   char[] array = word.toCharArray();
   char[] newArray = new char[array.length];
   for (int i = 0; i < array.length; i++) {
  char c = array[array.length-i-1];
  newArray[i] =(char)c;
 }
   if(word.equalsIgnoreCase(String.valueOf(newArray))){
    isPalindrome = true;
   }
   //second way of checking
   String reverse ="";
   for (int i = 0; i < word.length(); i++) {
  char c= word.charAt(i);
  reverse = c+reverse;
 }
   if(reverse.equalsIgnoreCase(word)){
    isPalindrome = true; 
   }
   
   
 
   return isPalindrome;
  }
  
  
  
}
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Saturday, February 10, 2018

Jersy Rest Webervice with eclipse and Weblogic 12c or tomcat


How to work with jersy rest webservice using eclipse and weblogic server/tomcat

Step 1: Create a dynamic web project in eclipse and provide project name





Step 2: open web.xml and add below configuration code for rest webservices.



  jersyRestService
  
    index.html
    index.htm
    index.jsp
    default.html
    default.htm
    default.jsp
  
      
        Jersey Web Application
        com.sun.jersey.spi.container.servlet.ServletContainer
    
    
        Jersey Web Application
        /rest/*

Step 3: Create one file name called weblogic.xml and add the below code.



12.2
    
        jax-rs
        2.0
        2.22.1.0
        false


Step 4: Download rest api related jar -http://repo1.maven.org/maven2/com/sun/jersey/jersey-archive/1.19.1/jersey-archive-1.19.1.zip Unzip the same and place the jar inside lib folder of the project.


Step 5: Create a class name called RestServiceAPI.java add below code.

package com.siva.restservice;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
/**
 * 
 * @author Siva
 *
 */

@Path("/helloRest")
public class SimpleRestService {
	
	
	@GET
	@Produces(MediaType.TEXT_PLAIN)
	public String getDetails(){
		System.out.println("This is Get request");
		return "Hello Welcome to Rest webservice";
	}
	@GET
	@Path("/getDetail/{requestParam}")
	@Produces(MediaType.TEXT_PLAIN)
	public String getDetailsWithParameter(@PathParam("requestParam") String requestParam){
		System.out.println("USer request paramater["+requestParam +"]");
		System.out.println("This is Get request");
		return "Hello Welcome to Rest webservice you have given input as -"+requestParam;
	}

}


Step 6: Create one config class called- ApplicationConfig.java
Right click on src-> Webservice->RestWebservice->select Classname- which class needs to be configured in ApplicationConfig Click Next-> Finish

package rest.application.config;

import java.util.HashSet;
import java.util.Set;

import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;
/**
 * 
 * @author Siva
 *
 */
@ApplicationPath("resources")
public class ApplicationConfig  extends Application{

	public Set> getClasses(){
		return getRestClasses();
	}
	
	private Set> getRestClasses(){
	  Set> resources = new HashSet>();	
	  resources.add(com.siva.restservice.SimpleRestService.class);
	  return resources;
	}
	
}


Step 7: This is very important step

Run the weblogic server and open the console
http://localhost:7001/console provide username and password and login the same into weblogic server admin console

Step 8: Click on the Deployments- the install the jax-rs-2.0.war, which is inside-
Oracle_home/wlserver/common/deployable-libraries
If you are working on jsr311 then deploy jsr311-api-111.war which is available on same path.


For Tomcat Deployment Step 3 , 6,7,8 not required

Right click on the Project and Run AS - server- select appropriate server and deploy the same.

if you want to test in browser use-
http://localhost:8080/jersyRestService/rest/helloRest
http://localhost:8080/jersyRestService/rest/helloRest/getDetail/helloRequest


Step 9: Create rest client class which get the test results for rest webservice
package com.siva.restservice.test;

import javax.ws.rs.core.MediaType;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;
/**
 * 
 * @author Siva
 *
 */
public class RestServiceClient {
	
	public static void main(String[] args) {
		String uri = "http://localhost:8080/jersyRestService/rest/helloRest";
		try{
			
			Client client = Client.create();
			WebResource resource = client.resource(uri);
			String response = resource.type(MediaType.TEXT_PLAIN).get(String.class);
			System.out.println("Response from Rest webservice["+response+"]");
			String request = "GetRestWithParam";
			uri = uri.concat("/getDetail/").concat(request);
			resource = client.resource(uri);
			String response1 = resource.type(MediaType.TEXT_PLAIN).get(String.class);
			System.out.println("Response from Rest webservice with parameter["+response1+"]");
		}
		catch(Exception ex){
			ex.printStackTrace();
		}
	}

}

Step 10: You can see the output as below

Response from Rest webservice[Hello Welcome to Rest webservice]
Response from Rest webservice with parameter[Hello Welcome to Rest webservice you have given input as -GetRestWithParam]

Thank you very much for viewing this post. If you like, don't forget to share/comment.


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Sunday, November 12, 2017

Read and Parse XML using JAXB and write to a flat file with fixed length format using fixedFormat4j and Java




This post will explain, how to read xml ,parse xml and write to a flat file with fixed length format.

Step 1: Create a maven project -< xmltofile>



Step2: paste the below code into pom.xml file.


  4.0.0
  xmltofile
  xmltofile
  0.0.1-SNAPSHOT
  
    src
    
      
        maven-compiler-plugin
        3.5.1
        
          1.8
          1.8
        
      
    
  
  
  
     
    com.ancientprogramming.fixedformat4j
    fixedformat4j
    1.2.2



Step 3: Now we need to create company.xml file under project- create one xml file add the below xml to that file.


  
        
                siva
                34
                Male
                35000
                01/07/1983
                
Present
                   Bangalore
                   Karnataka
                   India
                
Permanent
                   Kadapa
                   AndharaPradesh
                   India
                

         
         
                Sanjay
                27
                Male
                55000
                 01/07/1988
                
Present
                   Bangalore
                   Karnataka
                   India
                
Permanent
                   Hyderabad
                   Telangana
                   India
                

         
         
                Madhan
                34
                Male
                800000
                 01/07/1983
                
Present and Permanent
                   Bangalore
                   Karnataka
                   India

Step 4: Create pojo classes , which need to be parsed as per above xml.

i have created 3 classes - Company.java -> List of Employee.java -> List Of Address.java


Company.java - xmlroot elment is company which is there in xml.

package xmltofile;

import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name="company")
public class Company {
 
 private List employee = new ArrayList();

 @XmlElement(name="employee")
 public List getEmployee() {
  return employee;
 }

 public void setEmployee(List employee) {
  this.employee = employee;
 }

}


Employee.java 

package xmltofile;

import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.annotation.XmlElement;
public class Employee {
 
 private String name;
 private int age;
 private String gender;
 private Double salary;
 private String dob;
 List
address = new ArrayList
();
 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
 public int getAge() {
  return age;
 }
 public void setAge(int age) {
  this.age = age;
 }
 public String getGender() {
  return gender;
 }
 public void setGender(String gender) {
  this.gender = gender;
 }
 public Double getSalary() {
  return salary;
 }
 public void setSalary(Double salary) {
  this.salary = salary;
 }
 @XmlElement
 public List
getAddress() {
  return address;
 }
 public void setAddress(List
address) {
  this.address = address;
 }
 public String getDob() {
  return dob;
 }
 public void setDob(String dob) {
  this.dob = dob;
 }

}


Address.java

package xmltofile;

import javax.xml.bind.annotation.XmlRootElement;

public class Address {
 private String city;
 private String type;
 private String state;
 private String country;
 public String getCity() {
  return city;
 }
 public void setCity(String city) {
  this.city = city;
 }
 public String getType() {
  return type;
 }
 public void setType(String type) {
  this.type = type;
 }
 public String getState() {
  return state;
 }
 public void setState(String state) {
  this.state = state;
 }
 public String getCountry() {
  return country;
 }
 public void setCountry(String country) {
  this.country = country;
 }

}

Step 5: Now we need to write class using fixedformat4j API-


CompanyHeader.java

package xmltofile.fixedformat;

import com.ancientprogramming.fixedformat4j.annotation.Field;
import com.ancientprogramming.fixedformat4j.annotation.Record;

@Record
public class CompanyHeader {
 
 private String header1;
 private String header2;
 private String header3;
 
 @Field(offset = 1, length = 20)
 public String getHeader1() {
  return header1;
 }
 public void setHeader1(String header1) {
  this.header1 = header1;
 }
 @Field(offset = 30, length = 50)
 public String getHeader2() {
  return header2;
 }
 public void setHeader2(String header2) {
  this.header2 = header2;
 }
 @Field(offset = 60, length = 100)
 public String getHeader3() {
  return header3;
 }
 public void setHeader3(String header3) {
  this.header3 = header3;
 }
 
 

}


EmployeeHeader.java- This class will have - each filed -at what is the starting index and data length of the eachfiled 


package xmltofile.fixedformat;

import com.ancientprogramming.fixedformat4j.annotation.Field;
import com.ancientprogramming.fixedformat4j.annotation.Record;

@Record
public class EmployeeHeader {

 private String nameHeader;
 private String ageHeader;
 private String genderHeader;
 private String salaryHeader;
 private String dobHeader;
 private String addressHeader;
 
 @Field(offset = 1, length = 50)
 public String getNameHeader() {
  return nameHeader;
 }
 public void setNameHeader(String nameHeader) {
  this.nameHeader = nameHeader;
 }
 @Field(offset = 55, length = 3)
 public String getAgeHeader() {
  return ageHeader;
 }
 public void setAgeHeader(String ageHeader) {
  this.ageHeader = ageHeader;
 }
 @Field(offset = 60, length = 10)
 public String getGenderHeader() {
  return genderHeader;
 }
 public void setGenderHeader(String genderHeader) {
  this.genderHeader = genderHeader;
 }
 @Field(offset = 75, length = 10)
 public String getSalaryHeader() {
  return salaryHeader;
 }
 public void setSalaryHeader(String salaryHeader) {
  this.salaryHeader = salaryHeader;
 }
 @Field(offset = 90, length = 15)
 public String getDobHeader() {
  return dobHeader;
 }
 public void setDobHeader(String dobHeader) {
  this.dobHeader = dobHeader;
 }
 @Field(offset = 120, length = 200)
 public String getAddressHeader() {
  return addressHeader;
 }
 public void setAddressHeader(String addressHeader) {
  this.addressHeader = addressHeader;
 }
 

}


Step 6: Now we need to write test class to Parse the employee.xml using JAXB context and create the Flat file
and write the xml data into file at specified index.

XMLReaderAndWriteToFile.java 

package xmltofile;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Unmarshaller;

import com.ancientprogramming.fixedformat4j.format.FixedFormatManager;
import com.ancientprogramming.fixedformat4j.format.impl.FixedFormatManagerImpl;

import xmltofile.fixedformat.CompanyHeader;
import xmltofile.fixedformat.EmployeeHeader;

public class XMLReaderAndWriteToFile {

 public static void main(String[] args) {
  BufferedWriter bw = null;
  try {
   JAXBContext context = JAXBContext.newInstance(Company.class);
   // Create Unmarshaller using JAXB context
   Unmarshaller unmarshaller = context.createUnmarshaller();
   System.out.println("xml file started to load...");
   Company company = (Company) unmarshaller.unmarshal(new File("employee.xml"));
            System.out.println("xml file loaded and parsed successfully..");
   // Write to file with fixedformat
            System.out.println("Flat file started to create...");
   bw = new BufferedWriter(new FileWriter("fixedLength.txt", true));
   System.out.println("empty flat file created...");
   getCompanyHeader(bw);
   System.out.println("company header written successfully to file.");
   getEmployeeHeader(bw);
   System.out.println("employee header written successfully to file.");
   for (Employee employee : company.getEmployee()) {
    EmployeeHeader employeeDetails = new EmployeeHeader();
    employeeDetails.setNameHeader(employee.getName());
    employeeDetails.setAgeHeader(String.valueOf(employee.getAge()));
    employeeDetails.setGenderHeader(employee.getGender());
    employeeDetails.setDobHeader(String.valueOf(employee.getDob()));
    employeeDetails.setSalaryHeader(String.valueOf(employee.getSalary()));
    String completeAddress = "  ";
    for (Address address : employee.getAddress()) {
     String addressDetails = address.getCity() + " " + address.getState() + " " + address.getCountry()
       + " - " + address.getType();
     completeAddress = completeAddress.concat(addressDetails) + "     ";
    }
    employeeDetails.setAddressHeader(completeAddress);
    FixedFormatManager manager1 = new FixedFormatManagerImpl();
    String data1 = manager1.export(employeeDetails);
    bw.write(data1);
    bw.newLine();

   }
   System.out.println("Employee details written successfully to file.");

  } catch (Exception ex) {
   ex.printStackTrace();
  } finally {
   try {
    bw.close();
   } catch (IOException e) {
    e.printStackTrace();
   }
  }

 }

 private static void getEmployeeHeader(BufferedWriter bw) throws IOException {
  EmployeeHeader employeeHeader = new EmployeeHeader();
  employeeHeader.setNameHeader("Employee Name");
  employeeHeader.setAgeHeader("Age");
  employeeHeader.setGenderHeader("Gender");
  employeeHeader.setDobHeader("DOB");
  employeeHeader.setSalaryHeader("Salary");
  employeeHeader.setAddressHeader("Address");
  FixedFormatManager manager = new FixedFormatManagerImpl();
  String data = manager.export(employeeHeader);
  bw.write(data);
  bw.newLine();
  bw.newLine();
  bw.newLine();
 }

 private static void getCompanyHeader(BufferedWriter bw) throws IOException {
  CompanyHeader companyHeader = new CompanyHeader();
  companyHeader.setHeader1("ABC Company");
  companyHeader.setHeader2("Bangalore");
  companyHeader.setHeader3("India");
  FixedFormatManager manager = new FixedFormatManagerImpl();
  String data = manager.export(companyHeader);
  bw.write(data);
  bw.newLine();
  bw.newLine();
  bw.newLine();

 }

}

Output file will be like this.

ABC Company                  Bangalore                                                                                                                         


Employee Name                                         Age  Gender         Salary         DOB                           Address                                                                                                                                                                                                 


siva                                                         34   Male           35000.0        01/07/1983                      Bangalore Karnataka India - Present     Kadapa AndharaPradesh India - Permanent                                                                                                                       
Sanjay                                                     27   Male           55000.0        01/07/1988                      Bangalore Karnataka India - Present     Hyderabad Telangana India - Permanent                                                                                                                         
Madhan                                                   34   Male           800000.0       01/07/1983                     Bangalore Karnataka India - Present and Permanent


Thank you verymuch for viewing this post. If you like this don't forget to share.



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