How to use <apex:tabPanel>  in Visualforce Page?

<apex:tabPanel>:
  A page area that displays as a set of tabs. When a user clicks a tab header, the tab's associated content displays, hiding the content of other tabs.

This tag supports following attributes:

Attribute	Description
activeTabClass	The style class used to display a tab header in the tabPanel when it is selected, used primarily to designate which CSS styles are applied when using an external CSS stylesheet.
contentClass	The style class used to display tab content in the tabPanel component, used primarily to designate which CSS styles are applied when using an external CSS stylesheet.
contentStyle	The style used to display tab content in the tabPanel component, used primarily for adding inline CSS styles.
dir	The direction in which the generated HTML component should be read. Possible values include "RTL" (right to left) or "LTR" (left to right).
disabledTabClass	The style class used to display a tab header in the tabPanel when it is disabled, used primarily to designate which CSS styles are applied when using an external CSS stylesheet.
headerAlignment	The side of the tabPanel to which tab headers are aligned. Possible values include "left" or "right". If not specified, this value defaults to "left".
headerClass	The style class used to display all tab headers, regardless of whether or not they are selected, used primarily to designate which CSS styles are applied when using an external CSS stylesheet.
headerSpacing	The distance between two adjacent tab headers, in pixels. If not specified, this value defaults to 0.
height	The height of the tab bar, expressed either as a percentage of the available vertical space (for example, height="50%") or as a number of pixels (for example, height="200px"). If not specified, this value defaults to 100%.
id	An identifier that allows the tabBar component to be referenced by other components in the page.
immediate	A Boolean value that specifies whether the action associated with this component should happen immediately, without processing any validation rules associated with the fields on the page. If set to true, the action happens immediately and validation rules are skipped. If not specified, this value defaults to false.
inactiveTabClass	The style class used to display a tab header in the tabPanel when it is not selected, used primarily to designate which CSS styles are applied when using an external CSS stylesheet.
lang	The base language for the generated HTML output, for example, "en" or "en-US".
onclick	The JavaScript invoked if the onclick event occurs that is, if the user clicks the tabPanel.
ondblclick	The JavaScript invoked if the ondblclick event occurs that is, if the user clicks the tabPanel twice.
onkeydown	The JavaScript invoked if the onkeydown event occurs that is, if the user presses a keyboard key.
onkeypress	The JavaScript invoked if the onkeypress event occurs that is, if the user presses or holds down a keyboard key.
onkeyup	The JavaScript invoked if the onkeyup event occurs that is, if the user releases a keyboard key.
onmousedown	The JavaScript invoked if the onmousedown event occurs that is, if the user clicks a mouse button.
onmousemove	The JavaScript invoked if the onmousemove event occurs that is, if the user moves the mouse pointer.
onmouseout	The JavaScript invoked if the onmouseout event occurs that is, if the user moves the mouse pointer away from the tabPanel component.
onmouseover	The JavaScript invoked if the onmouseover event occurs that is, if the user moves the mouse pointer over the tabPanel component.
onmouseup	The JavaScript invoked if the onmouseup event occurs that is, if the user releases the mouse button.
rendered	A Boolean value that specifies whether the component is rendered on the page. If not specified, this value defaults to true.
reRender	The ID of one or more components that are redrawn when the result of an AJAX update request returns to the client. This value can be a single ID, a comma-separated list of IDs, or a merge field expression for a list or collection of IDs. Note that this value only applies when the switchType attribute is set to "ajax".
selectedTab	The name of the default selected tab when the page loads. This value must match the name attribute on a child tab component. If the value attribute is defined, the selectedTab attribute is ignored.
style	The style used to display the tabPanel component, used primarily for adding inline CSS styles.
styleClass	The style class used to display the tabPanel component, used primarily to designate which CSS styles are applied when using an external CSS stylesheet.
switchType	The implementation method for switching between tabs. Possible values include "client", "server", and "ajax". If not specified, this value defaults to "server".
tabClass	The style class used to display the tabPanel component, used primarily to designate which CSS styles are applied when using an external CSS stylesheet.
title	The text to display as a tooltip when the user's mouse pointer hovers over this component.
value	The current active tab. You can specify this with an expression to dynamically control the active tab. For example, value="{!TabInFocus}", where TabInFocus is a variable set by a custom controller. The value of this attribute overrides the one set in selectedTab.
width	The width of the tabPanel, expressed either as a percentage of the available horizontal space (for example, width="50%") or as a number of pixels (for example, width="800px"). If not specified, this value defaults to 100%.

Visualforce Example:

<apex:page id="thePage">

    <apex:tabPanel switchType="client" selectedTab="name2" id="theTabPanel">

        <apex:tab label="One" name="name1" id="tabOne">content for tab one</apex:tab>

        <apex:tab label="Two" name="name2" id="tabTwo">content for tab two</apex:tab>

    </apex:tabPanel>

</apex:page>