How to open a link in new tab.

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.interactions.Actions;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.testng.annotations.Test;

public class NewTab {
    public static void main(String[] args) {
        DesiredCapabilities capability = DesiredCapabilities.firefox();
        WebDriver driver = new FirefoxDriver();
        driver.get("http://www.google.com");
        Actions act = new Actions(driver);
        WebElement link = driver.findElement(By.id("gb_70"));
        act.moveToElement(link).contextClick().sendKeys("T").perform();
       
    }
}