HCL – Selenium Interview Questions 2022

31. I have three unique buttons in my page.(Display names are different)

32. The internal ID & Name changes on every page load.

33. I need to click on each button in sequence.

		Use the below code:
package pkYourPackage;

    import java.util.List;

    import org.openqa.selenium.By;
    import org.openqa.selenium.JavascriptExecutor;
    import org.openqa.selenium.WebDriver;
    import org.openqa.selenium.WebElement;
    import org.openqa.selenium.chrome.ChromeDriver;
  // http://demo.opencart.com/index.php?route=product/category&path=24
public class OpenCart_StackOverflow {
        static WebDriver driver;
        public static void main(String[] args) {
            System.setProperty("webdriver.chrome.driver", "C:/.....put_ path/chromedriver.exe");
            driver = new ChromeDriver();

            driver.get("http://demo.opencart.com/index.php?route=product/category&path=24");
            try{Thread.sleep(5000);}catch(Exception e){}
 List list = driver.findElements(By.xpath("//button[contains(@data-original-title,'Compare this')]/i"));
            for(int i = 0 ; i < list.size() ; i++){
                list.get(i).click();
try{Thread.sleep(1500);}catch(Exception e){}

            }
            try{Thread.sleep(1500);}catch(Exception e){}

            // click on 'product comparison' to compare
            ((JavascriptExecutor)driver).executeScript("arguments[0].click();",driver.findElement(By.xpath("//*[contains(text(),'product comparison')]")));
            try{Thread.sleep(10000);}catch(Exception e){}
            driver.close();
            driver.quit();

        }
    }



		

34. Write a program to find the largest of 3 numbers

		import java.util.Scanner;
public class Biggest_Number 
{
    public static void main(String[] args) 
    {
        int x, y, z;
        Scanner s = new Scanner(System.in);
        System.out.print("Enter the first number:");
        x = s.nextInt();
        System.out.print("Enter the second number:");
        y = s.nextInt();
        System.out.print("Enter the third number:");
        z = s.nextInt();
        if(x > y && x > z)
        {
            System.out.println("Largest number is:"+x);
        }
        else if(y > z)
        {
            System.out.println("Largest number is:"+y);
        }
        else
        {
            System.out.println("Largest number is:"+z);
        }
 
    }
}
Output:

$ javac Biggest_Number.java
$ java Biggest_Number
 
Enter the first number:10
Enter the second number:17
Enter the third number:15
Largest number is:17

		

35. Write a program to obtain the ipaddress from the user and chk if the ipaddress is valid or not

		import org.apache.commons.validator.routines.InetAddressValidator;
 
// Java program to validate `IPv4` and `IPv6` address
class Main
{
    // an IPv4 address
    private static final String INET4ADDRESS = "172.8.9.28";
 
    // an IPv6 address
    private static final String INET6ADDRESS =
                            "2001:0db8:85a3:0000:0000:8a2e:0370:7334";
 
    public static void main(String[] args)
    {
        // Get an `InetAddressValidator`
        InetAddressValidator validator = InetAddressValidator.getInstance();
 
        // Validate an IPv4 address
        if (validator.isValidInet4Address(INET4ADDRESS)) {
            System.out.print("The IP address " + INET4ADDRESS + " is valid");
        }
        else {
            System.out.print("The IP address " + INET4ADDRESS + " isn't valid");
        }
 
        // Validate an IPv6 address
        if (validator.isValidInet6Address(INET6ADDRESS)) {
            System.out.print("The IP address " + INET6ADDRESS + " is valid");
        }
        else {
            System.out.print("The IP address " + INET6ADDRESS + " isn't valid");
        }
    }
}
Output:
The IP address 172.8.9.28 is valid
The IP address 2001:0db8:85a3:0000:0000:8a2e:0370:7334 is valid

		

36. Write a program to check if you have received mail from hcl using webtable

37. Ur project architecture

38. Diff between hashmap and hashtable?

39. What is serialization?

Serialization in Java allows us to convert an Object to stream that we can send over the network or save it as file or store in DB for later usage.

Serialization in Java seems very easy to use at first but it comes with some trivial security and integrity issues

40. What is anonymous class?

Java anonymous class are like local class or inner class without a name. We can use java anonymous class to declare and instantiate a class at the same time.

41. How to create a immutable class?

	For example:
import java.util.HashMap;
import java.util.Map;
 
// An immutable class
public final class Student {
    private final String name;
    private final int regNo;
    private final Map metadata;
 
    public Student(String name, int regNo,
                   Map metadata)
    {
        this.name = name;
        this.regNo = regNo;
        Map tempMap = new HashMap<>();
        for (Map.Entry entry :
             metadata.entrySet()) {
            tempMap.put(entry.getKey(), entry.getValue());
        }
        this.metadata = tempMap;
    }
 
    public String getName() { return name; }
 
    public int getRegNo() { return regNo; }
 
    public Map getMetadata()
    {
        Map tempMap = new HashMap<>();
        for (Map.Entry entry :
             this.metadata.entrySet()) {
            tempMap.put(entry.getKey(), entry.getValue());
        }
        return tempMap;
    }
}
 
// Driver class
class Test {
    public static void main(String[] args)
    {
        Map map = new HashMap<>();
        map.put("1", "first");
        map.put("2", "second");
        Student s = new Student("ABC", 101, map);
        System.out.println(s.getName());
        System.out.println(s.getRegNo());
        System.out.println(s.getMetadata());
 
        // Uncommenting below line causes error
        // s.regNo = 102;
 
        map.put("3", "third");
        System.out.println(s.getMetadata()); // Remains unchanged due to deep copy in constructor
 
        s.getMetadata().put("4", "fourth");
        System.out.println(s.getMetadata()); // Remains unchanged due to deep copy in getter
    }
}
Output
ABC
101
{1=first, 2=second}
{1=first, 2=second}
{1=first, 2=second}

	

42. Challenges faced in selenium

• False Positive and False Negative Results
• Captcha or OTP Handling
• Pop up and Alert Handling
• Limited Reporting

43. How will you locate the dynamic objects in a webpage?

• className
• tagName
• id
• name
• partialText
• linkText
• xpath
• css selector

44. Prog to reverse a string

		/ Java program to ReverseString using ByteArray.
import java.lang.*;
import java.io.*;
import java.util.*;
 
// Class of ReverseString
class ReverseString {
    public static void main(String[] args)
    {
        String input = "credosystemz";
 
        // getBytes() method to convert string
        // into bytes[].
        byte[] strAsByteArray = input.getBytes();
 
        byte[] result = new byte[strAsByteArray.length];
 
        // Store result in reverse order into the
        // result byte[]
        for (int i = 0; i < strAsByteArray.length; i++)
            result[i] = strAsByteArray[strAsByteArray.length - i - 1];
 
        System.out.println(new String(result));
    }
}
Output: 
zmetsysoderc

		

45. Obtain the number of chars in a text file

46. Obtain the number of chars in a text file

47. Read a property file

		import java.io.*;
import java.util.*;
public class ReadPropertiesFileTest {
   public static void main(String args[]) throws IOException {
      Properties prop = readPropertiesFile("credentials.properties");
      System.out.println("username: "+ prop.getProperty("username"));
      System.out.println("password: "+ prop.getProperty("password"));
   }
   public static Properties readPropertiesFile(String fileName) throws IOException {
      FileInputStream fis = null;
      Properties prop = null;
      try {
         fis = new FileInputStream(fileName);
         prop = new Properties();
         prop.load(fis);
      } catch(FileNotFoundException fnfe) {
         fnfe.printStackTrace();
      } catch(IOException ioe) {
         ioe.printStackTrace();
      } finally {
         fis.close();
      }
      return prop;
   }
}
Output
username: admin
password: admin@123

		

48. How to handle ajax alerts and frames?

49. Write a java program, to swap without using 3rd variable?

		import java.util.*;  
class Swap   
{  
    public static void main(String a[])   
    {   
        System.out.println("Enter the value of x and y");  
        Scanner sc = new Scanner(System.in);  
        /*Define variables*/  
        int x = sc.nextInt();  
        int y = sc.nextInt();  
        System.out.println("before swapping numbers: "+x +" "+ y);  
       /*Swapping*/  
        x = x + y;   
        y = x - y;   
        x = x - y;   
        System.out.println("After swapping: "+x +"  " + y);   
    }   
}  
Output:

Enter the value of x and y
23  43
before swapping numbers: 23  43
After swapping:  43  23

		

50. Write a Java program to read text from a file and display it.

51. Write a Java program to get file name from the given string.

		import java.util.Scanner;
import java.io.*;

public class JavaProgram
{
    public static void main(String[] input)
    {
        String fname;
        Scanner scan = new Scanner(System.in);
        
        /* enter filename with extension to open and read its content */
        
        System.out.print("Enter File Name to Open (with extension like file.txt) : ");
        fname = scan.nextLine();
        
        /* this will reference only one line at a time */
        
        String line = null;
        try
        {
            /* FileReader reads text files in the default encoding */
            FileReader fileReader = new FileReader(fname);
            
            /* always wrap the FileReader in BufferedReader */
            BufferedReader bufferedReader = new BufferedReader(fileReader);
            
            while((line = bufferedReader.readLine()) != null)
            {
                System.out.println(line);
            }
            
            /* always close the file after use */
            bufferedReader.close();
        }
        catch(IOException ex)
        {
            System.out.println("Error reading file named '" + fname + "'");
        }
    }
}
import java.io.File;

class Main {

  public static void main(String[] args) {

    // link to file Test.class
    File file = new File("C:\\Users\\Sudip Bhandari\\Desktop\\Programiz\\Java Article\\Test.class");

    // get file name using getName()
    String fileName = file.getName();
    System.out.println("File Name: " + fileName);

  }
}
Output
File Name: Test.class

		

Str = “C:\Programs\TextFile.txt”

Write a sql sub query to join Employee(T1, T2, T3) and return the table 3 values

Write a selenium script to print the table values? Table is like 3X3 table with values A, B, C, 1, 2, 3, 4, 5, 6.

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