How to take snapshot in Selenium WebDriver using java.

 import java.io.File;  
 import java.io.IOException;  
 import java.util.concurrent.TimeUnit;  
 import org.apache.commons.io.FileUtils;  
 import org.openqa.selenium.OutputType;  
 import org.openqa.selenium.TakesScreenshot;  
 import org.openqa.selenium.WebDriver;  
 import org.openqa.selenium.firefox.FirefoxDriver;  
 public class Takesnapshot {  
   public static void main(String[] args) throws IOException {  
     // Intialize Web driver  
     WebDriver driver = new FirefoxDriver();  
     //Maximizw window  
     driver.manage().window().maximize();  
      //Launch website  
     driver.get("http://www.yahoo.com");  
     // wait for page loads  
    driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);  
     // Takes snapshort  
     File scrFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);  
     // Save screen shot desired location  
     FileUtils.copyFile(scrFile, new File("screenshot.png"));  
     // close wbe driver  
     driver.quit();  
   }  
 }  

How to read pdf content in Java

Download pdfbox jar Add pdfbox jar in your project

import java.io.File;
import java.io.IOException;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.util.PDFTextStripper;


public class Readcontentfrompdf {
    
    public static void main(String[] args) throws IOException {

        PDDocument pd;  
//       load pdf file
        pd=PDDocument.load(new File("Specification.pdf"));  
        
        PDFTextStripper pdftext = new PDFTextStripper();        
        System.out.println("Text =: " + pdftext.getText(pd));
        
    }
}

How to read all files in a folder in Java.

import java.io.File;

public class Readallfiles {

     //File location
     static File mainFolder = new File("D:\\Images");

     public static void main(String[] args)
     {
         Readallfiles lf = new Readallfiles();
         lf.getFiles(lf.mainFolder);

     }
     public void getFiles(File f){
         File files[];
         if(f.isFile())
     // File name
             System.out.println(f.getName());
         else{
             files = f.listFiles();
             for (int i = 0; i < files.length; i++) {
                 getFiles(files[i]);
             }
         }
     }
}

How to perform load testing on MS SQL Server using jmeter.

1. Download Microsoft JDBC Driver for SQL Server: Download driver. put it to folder lib of JMETER.

2. Open Jmeter from : apache-jmeter_home/bin/jmeter.bat or ApacheJMeter.jar

3. Add Users

Select the Test Plan, right click on Test Plan, select Add> Threads(Users)> Thread Group
Set up the following fields for Users:
a. Set value for Numbers of Threads(users): 5
b. Set value for Ram-up Periods : 2.
It means that 5 users connect to MYSQL server withine 2 seconds.

4.Add JDBC Connection Configuration

Right click on the 'Thread Group', select Add > Config Element > JDBC Connection Configuration.
Set up the following fields for MySQL database:
a. Variable name bound to pool. This needs to uniquely identify the configuration. It is used by the JDBC Sampler to identify the configuration to be used. We have named it as 'mssqlpool'
b. Database URL: jdbc:sqlserver://host:port;DatabaseName=dbname
c. JDBC Driver class: com.microsoft.sqlserver.jdbc.SQLServerDriver
d. Username: username of database
e. Password: password of database
f.The other fields can be left as the defaults

5. Add JDBC Requests

Right click on the 'Thread Group', select Add > Sampler > JDBC Request.
Then, select this new element to view its Control Panel. Edit the properties as below:
a. Enter the Pool Name: mssqlpool (same as in the configuration element)
b. Query Type: Select statement
c. Enter the SQL Query String field.

6. Adding a Listener to View/Store the Test Results

Right click on the 'Thread Group', select Add --> Listener --> View Results Tree and Summary Report
Save the test plan, and run the test with the menu Run --> Start or Ctrl+R

How to perform load testing on Postgresql Database using jmeter.

1. download the postgresql driver class for JMeter: Download postgresql driver. put it to folder lib of JMETER.

2. Open Jmeter from : apache-jmeter_home/bin/jmeter.bat or ApacheJMeter.jar

3. Add Users

Select the Test Plan, right click on Test Plan, select Add> Threads(Users)> Thread Group
Set up the following fields for Users:
a. Set value for Numbers of Threads(users): 5
b. Set value for Ram-up Periods : 2.
It means that 5 users connect to MYSQL server withine 2 seconds.

4.Add JDBC Connection Configuration

Right click on the 'Thread Group', select Add > Config Element > JDBC Connection Configuration.
Set up the following fields for MySQL database:
a. Variable name bound to pool. This needs to uniquely identify the configuration. It is used by the JDBC Sampler to identify the configuration to be used. We have named it as 'Postgresqlpool'.
b. Database URL: jdbc:postgresql://IPAddress:PortNo/DatabaseName?autoReconnect=true
c. JDBC Driver class: org.postgresql.Drive
d. Username: username of database
e. Password: password of database
f.The other fields can be left as the defaults

5. Add JDBC Requests

Right click on the 'Thread Group', select Add > Sampler > JDBC Request.
Then, select this new element to view its Control Panel. Edit the properties as below:
a. Enter the Pool Name: Postgresqlpool (same as in the configuration element)
b. Query Type: Select statement
c. Enter the SQL Query String field.

6. Adding a Listener to View/Store the Test Results

Right click on the 'Thread Group', select Add --> Listener --> View Results Tree and Summary Report
Save the test plan, and run the test with the menu Run --> Start or Ctrl+R

How to perform load testing on Mysql Database using jmeter.

1. Mysql driver jar file for Jmeter: Download Mysql driver. Extract file 'com.mysql.jdbc_5.1.5.jar.zip' and put it to folder lib of JMETER.

2. Open Jmeter from : apache-jmeter_home/bin/jmeter.bat or ApacheJMeter.jar

3. Add Users

Select the Test Plan, right click on Test Plan, select Add> Threads(Users)> Thread Group
Set up the following fields for Users:
a. Set value for Numbers of Threads(users): 5
b. Set value for Ram-up Periods : 2.
It means that 5 users connect to MYSQL server withine 2 seconds.

4.Add JDBC Connection Configuration

Right click on the 'Thread Group', select Add > Config Element > JDBC Connection Configuration.
Set up the following fields for MySQL database:
a. Variable name bound to pool. This needs to uniquely identify the configuration. It is used by the JDBC Sampler to identify the configuration to be used. We have named it as 'dbconnectionpool'
b. Database URL: jdbc:mysql://IP:3306/databasename
c. JDBC Driver class: com.mysql.jdbc.Driver
d. Username: root
e. Password: password for root
f.The other fields can be left as the defaults

5. Add JDBC Requests

Right click on the 'Thread Group', select Add > Sampler > JDBC Request.
Then, select this new element to view its Control Panel. Edit the properties as below:
a. Enter the Pool Name: dbconnectionpool (same as in the configuration element)
b. Query Type: Select statement
c. Enter the SQL Query String field.

6. Adding a Listener to View/Store the Test Results

Right click on the 'Thread Group', select Add --> Listener --> View Results Tree and Summary Report
Save the test plan, and run the test with the menu Run --> Start or Ctrl+R