ObjectMap java is class that helps us to build Object Repository in selenium webdriver.

ObjectMap.java

import org.openqa.selenium.By;
import org.openqa.selenium.WebElement;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;


public class ObjectMap extends ActionUtilities{
  Properties properties;

  /**
  * This is Constructor Method accepts Absolute path of object map file and load it into memory.
  * @param mapFilePath
  */
  public ObjectMap(String mapFilePath){
    properties = new Properties();
    try {
      FileInputStream fileInputStream = new FileInputStream(mapFilePath);
      properties.load(fileInputStream);
      fileInputStream.close();
    }catch (IOException e) {
      System.out.println(e.getMessage());
    }
}

/**
* This is Method accepts LogicalElementName present in object map file and returns By of type webdriver.
* @param logicalElementName
*/
  public By getLocator(String logicalElementName) {
  try {
    String locator = properties.getProperty(logicalElementName);
    String locatorType = locator.split("~")[0];
    String locatorValue = locator.split("~")[1];
    
    switch (locatorType.toUpperCase()) {
      case "ID":
      return By.id(locatorValue);
      case "NAME":
      return By.name(locatorValue);
      case "CLASSNAME":
      return By.className(locatorValue);
      case "TAGNAME":
      return By.tagName(locatorValue);
      case "LINKTEXT":
      return By.linkText(locatorValue);
      case "PARTIALLINKTEXT":
      return By.partialLinkText(locatorValue);
      case "CSSSELECTOR":
      return By.cssSelector(locatorValue);
      case "XPATH":
      return By.xpath(locatorValue);
      default:
      return null;
    }
  }catch (NullPointerException e){
    System.out.println(e.getMessage());
    return null;
  }
}

  /**
  * This is Method accepts LogicalElementName present in object map file and returns webelement of type webdriver.
  * @param logicalElementName
  */
  public WebElement getElement(String logicalElementName){
    return driver.findElement(getLocator(logicalElementName));
  }

  /**
  * Property getter
  * @param propertyName
  */    
  public String getProperty(String propertyName){
    return  properties.getProperty(propertyName);
  }

  /**
  * Property setter.
  */
  public void setProperty(String key, String value) {
     properties.setProperty(key,value);
  }
  
}