How to verify the check box is checked or not?

Here i am writing steps how to verify the check box is checked or not?



import com.thoughtworks.selenium.*;

import org.openqa.selenium.server.*;
import org.testng.annotations.*;


public class Checkbox {
public Selenium selenium;
public SeleniumServer seleniumserver;

  @BeforeClass
  public void setUp() throws Exception {
RemoteControlConfiguration rc = new RemoteControlConfiguration();
seleniumserver = new SeleniumServer(rc);
selenium = new DefaultSelenium("localhost", 4444, "*firefox", "http://");
seleniumserver.start();
selenium.start();
}

@Test
public void testCheckbox()throws Exception {

selenium.open("http://www.google.com");
selenium.windowMaximize();
selenium.click("link=Search settings");
selenium.waitForPageToLoad("50000");
/*Here i am verifying the check box for English. English check
box is already checked so if case will be executed*/
//here pen is the id of the check box
if(selenium.isChecked("pen"))
{
System.out.println("check box already checked");
}
else
{
System.out.println("Check box not checked");
}
}
 @AfterClass
 public void tearDown()throws Exception {
selenium.stop();
seleniumserver.stop();

 }
 }