How to use String operations like as compare, replace, search and split string etc in Selenium Webdriver

How to use String operations like as compare, replace, search and split string etc in Selenium Webdriver
Common programming tasks like as compares the two given strings, searches the sequence of characters in this string, eliminates leading and trailing spaces, length of the string, a string replacing all the old char or CharSequence to new char or CharSequence, converts all characters of the string into lower to upper, upper to lower case letter etc and in Java has special String class that provides several methods to handle those type of operation. We can use String methods in selenium webdriver to operate these type tasks. This tutorial I will see how to use these String methods in selenium webdriver.


Method name: trim
Syntax : public String trim()
Purpose : Return string with omitted leading and trailing spaces

Method name: contains
Syntax : public boolean contains(CharSequence sequence)
Purpose : searches the sequence of characters in this string. It returns true if sequence of char values are found in this string otherwise returns false.

Method name: format
Syntax : public static String format(String format, Object... args) )
Purpose : returns the formatted string by given locale, format and arguments.

Method name: startsWith
Syntax : public boolean startsWith(String Sequence_of_character)
Purpose : checks if this string starts with given Sequence of character. It returns true if this string starts with given Sequence of character else returns false.

Method name: endsWith
Syntax : public boolean endsWith(String Sequence_of_character)
Purpose : checks if this string ends with given Sequence of character. It returns true if this string ends with given Sequence of character else returns false.

Method name: equals and equalsIgnoreCase
Syntax : public boolean equals(Object anotherObject) or public boolean equalsIgnoreCase(Object anotherObject
Purpose : compares the two given strings based on the content of the string. If any character is not matched, it returns false. If all characters are matched, it returns true. equals method is case sensitive and equalsIgnoreCase is not case sensitive.

Method name: isEmpty
Syntax : public boolean isEmpty()
Purpose : checks if this string is empty. It returns true, if length of string is 0 otherwise false.

Method name: length or size
Syntax : public int length() or public int size()
Purpose : length of the string. It returns count of total number of characters.

Method name: replace
Syntax : public String replace(char oldChar, char newChar)
Purpose : returns a string replacing all the old char or CharSequence to new char or CharSequence.

Method name: split
Syntax : public String split(String regex)
Purpose : splits this string against given regular expression and returns a char array

Method name: toLowerCase
Syntax : public String toLowerCase()
Purpose : returns the string in lowercase letter. In other words, it converts all characters of the string into lower case letter.

Method name: toUpperCase
Syntax : public String toUpperCase()
Purpose : returns the string in uppercase letter. In other words, it converts all characters of the string into upper case letter.

Demo Java Source Code
public class Stringmethodshandler {
   public static void main(String[] args) {
     String str_normal, str_equals, stra[];
     double formatnumer = 125.58655;
     str_normal = " Welcome to Java Demo Program ";
     str_equals = "Selenium Webdriver";
     // trim method example
     System.out.println("Befor Trim =: " + str_normal);
     System.out.println("After Trim =: " + str_normal.trim());
     // contains method example
     if (str_normal.contains("Demo")) {
       System.out.println("contains method pass");
     } else {
       System.out.println("contains method fail");
     }
     // startsWith method example
     if (str_normal.trim().startsWith("Welc")) {
       System.out.println("startsWith method pass");
     } else {
       System.out.println("startsWith method fail");
     }
     // endsWith method example
     if (str_normal.trim().endsWith("ogram")) {
       System.out.println("endsWith method pass");
     } else {
       System.out.println("endsWith method fail");
     }
     // isEmpty method example
     if (str_normal.isEmpty()) {
       System.out.println("isEmpty method pass");
     } else {
       System.out.println("isEmpty method fail");
     }
     // equals method example
     if (str_equals.equals("Selenium webdriver")) {
       System.out.println("equals method pass");
     } else {
       System.out.println("equals method fail");
     }
     // equalsIgnoreCase method example
     if (str_equals.equalsIgnoreCase("Selenium webdriver")) {
       System.out.println("equalsIgnoreCase method pass");
     } else {
       System.out.println("equalsIgnoreCase method fail");
     }
     // length method example    
     System.out.println("String length =: " + str_normal.length());
     // replace method example
     System.out.println("String replaced =: " + str_normal.trim().replace("Demo", "Example"));
     // format method example
     System.out.println("Format method examplet =: " + String.format("%.2f", formatnumer));
     // toLowerCase method example
     System.out.println("toLowerCase method example =: " + str_equals.toLowerCase());
     // toUpperCase method example
     System.out.println("toUpperCase method example =: " + str_equals.toUpperCase());
     // split method example
     System.out.println("============================================================");
     stra = str_normal.trim().split(" ");
     for (int i = 0; i < stra.length; i++) {
       System.out.println("splited string =: " + i + " " + stra[i]);
     }
   }
 }
Output
 Befor Trim =:  Welcome to Java Demo Program
 After Trim =: Welcome to Java Demo Program
 contains method pass
 startsWith method pass
 endsWith method pass
 isEmpty method fail
 equals method fail
 equalsIgnoreCase method pass
 String length =: 30
 String replaced =: Welcome to Java Example Program
 Format method examplet =: 125.59
 toLowerCase method example =: selenium webdriver
 toUpperCase method example =: SELENIUM WEBDRIVER
 ============================================================
 splited string =: 0 Welcome
 splited string =: 1 to
 splited string =: 2 Java
 splited string =: 3 Demo
 splited string =: 4 Program
Selenium Webdriver Demo Source Code
 import java.util.concurrent.TimeUnit;
 import org.openqa.selenium.By;
 import org.openqa.selenium.WebDriver;
 import org.openqa.selenium.WebElement;
 import org.openqa.selenium.firefox.FirefoxDriver;
 import org.openqa.selenium.support.ui.Select;
 public class SeleStringmethodshandler {
   public static void main(String[] args) throws InterruptedException {
     String selected_country_name, link_signup, strspilt[];
     // create objects and variables instantiation  
     WebDriver driver = new FirefoxDriver();
     // maximize the browser window  
     driver.manage().window().maximize();
     // launch the firefox browser and open the application url  
     driver.get("http://www.gmail.com/");
     //Set timeout  
     driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
     // trim, equalsIgnoreCase method example
     Select countres = new Select(driver.findElement(By.id("lang-chooser")));
     selected_country_name = countres.getFirstSelectedOption().getText();
     System.out.println("Selected country name =: " + selected_country_name);
     if (!(selected_country_name.trim().equalsIgnoreCase("English (United States)"))) {
       countres.selectByValue("en");
     }
     // size method example
     for (int i = 0; i < countres.getOptions().size(); i++) {
       System.out.println("Country name =: " + i + " " + countres.getOptions().get(i).getText().trim());
     }
     // contains method example
     if (driver.getPageSource().contains("Gmail")) {
       System.out.println("Gmail is contain in www.gmail.com");
     } else {
       System.out.println("Gmail is not contain in www.gmail.com");
     }
     link_signup = driver.findElement(By.id("link-signup")).getText().trim();
     // startsWith method example
     if (link_signup.startsWith("Create")) {
       System.out.println("startsWith method pass");
     }
     // endsWith method example
     if (link_signup.endsWith("account")) {
       System.out.println("endsWith method pass");
     }
     // isEmpty method example
     if (!(link_signup.isEmpty())) {
       System.out.println("isEmpty method pass");
     }
     // equals method example
     if (link_signup.equals("Create account")) {
       System.out.println("equals method pass");
     }
     // toUpperCase method example
     System.out.println("toUpperCase method example =: " + link_signup.toUpperCase());
     // toLowerCase method example
     System.out.println("toLowerCase method example =: " + link_signup.toLowerCase());
     // split method example
     strspilt = link_signup.split(" ");
     for (int i = 0; i < strspilt.length; i++) {
       System.out.println(strspilt[i]);
     }
     // quit Firefox browser  
     driver.quit();
   }
 }