Java Selenium chromedriver error

Chromedriver is located at the same place as this file.

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

public WebDriver getDriver(final String browser) {
        System.setProperty("webdriver.chrome.driver", "chromedriver");
        WebDriver driver = null;
        driver = new ChromeDriver();
        driver.manage().window().maximize();
        driver.manage().timeouts().implicitlyWait(5000, TimeUnit.MILLISECONDS);
        return driver;
    }

error: package import org.openqa.selenium.WebDriver does not exist

error: package org.openqa.selenium.chrome.ChromeDriver does not exist

I have refered to the link but failed to resolve it

Here is pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.selenium.demo</groupId>
    <artifactId>SeleniumMavenDemo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-java</artifactId>
            <version>3.141.59</version>
        </dependency>
        <dependency>
            <groupId>org.testng</groupId>
            <artifactId>testng</artifactId>
            <version>6.14.3</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>4.1.0</version>
        </dependency>               
    </dependencies>
    <build>
        <plugins>
            <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.1</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.12</version>
                <configuration>
                  <suiteXmlFiles>
                    <suiteXmlFile>testng.xml</suiteXmlFile>
                  </suiteXmlFiles>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>