selenium - submenu click not working - selenium

Question

i am not able to click the submenu.. tried with different xpath/id .....
below is the html tags, Main Menu is Presentations(marked in red arrow) and submenus are under div.
can you please let me know how i can write xpath for this. i wanted to click hypothetical in the submenu.
here main menu tag is at the bottom of div(submenu).
also attached selenium code . please help me....
<div id="presentations" class="ToolbarSubMenu" align="left"parent="presentations_parent">
<a id="hypothetical" class="ToolbarMenu" href="">Hypothetical</a><br/>
</div>
<a id="presentations_parent" class="ToolbarMenu" href="">Presentations</a>
#Test
public void hypothetical()
{
WebElement ic = driver.findElement(By.id("presentations"));
Actions act = new Actions(driver);
// act.moveToElement(ic).click().build().perform();
//act.moveToElement(ic).doubleClick().build().perform();
act.moveToElement(ic).clickAndHold().release().build().perform();
//ic.click();
//driver.switchTo().window(myWindowHandle);
// driver.findElement(By.linkText("Hypothetical")).click();
// driver.findElement(By.xpath("//div[2][#id='presentations']/a[1]")).click();
//Actions act = new Actions(driver);
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// WebElement hyp=driver.findElement(By.partialLinkText("Hypothetical"));
WebElement hyp=driver.findElement(By.id("//div[#id='presentations']/a[1]"));
//act.moveToElement(hyp).click().build().perform();
hyp.click();

Answer 1

Use below code:
//Click on main menu that will opens the sub Menu list
WebElement ic = driver.findElement(By.id("presentations"));
ic.click();
If your requirement is to click on each individual sub menu item,then use below code:
click for Hypothetical is:
ic.findElement(By.id("hypothetical")).click();
click for Profile is:
ic.findElement(By.id("profile")).click();
(Or)
You can also get all subMenu items at a time, like this:
//Get all the sub menu list.
List<WebElement> list = ic.findElements(By.tagName("a"));
for(int i=0;i < list.size; i++){
WebElement subMenuElement = list.get(i);
subMenuElement.click();
}

Answer 2

driver.findElement(By.id("presentations")).click();
WebElement hyp = driver.findElement(By.id("hypothetical"));
hyp.click();