Clear the NavigableMap in Java, using the clear() method.Let us first create a NavigableMap and add some elements to it −NavigableMap n = new TreeMap(); n.put(5, "Tom"); n.put(9, "John"); n.put(14, "Jamie"); n.put(1, "Tim"); n.put(4, "Jackie"); n.put(15, "Kurt"); n.put(19, "Tiger"); n.put(24, "Jacob");Now, use the clear() method −n.clear();The following is an example ... Read More

To implement animation on box-shadow property with CSS, you can try to run the following codeExampleLive Demo                    div {             width: 200px;             height: 300px;             background: yellow;             border: 10px solid red;             animation: myanim 3s infinite;             bottom: 30px;             position: absolute;          }          @keyframes myanim {             20% {                bottom: 100px;                box-shadow: 30px 45px 70px orange;             }          }                     Performing Animation on box-shadow          

To count the number of elements in a HashSet, use the size() method.Create HashSet −String strArr[] = { "P", "Q", "R" }; Set s = new HashSet(Arrays.asList(strArr));Let us now count the number of elements in the above Set −s.size()The following is an example to count the number of elements in ... Read More

With CSS3, you can always create shapes like rectangle, triangle, etc.Let us see how −The following is a rectangle −#shape1 {    width: 300px;    height: 150px;    background: blue; }The following is a triangle −#shape2 {    width: 0;    height: 0;    border-left: 200px solid transparent;    border-bottom: 200px solid blue; }

To create a 3D sphere, use the HTML5 canvas. You can use the following function in your code:function display(r) {    this.point = new Array();    this.color = "blue)"    this.r = (typeof(r) == "undefined") ? 20.0 : r;    this.r = (typeof(r) != "number") ? 20.0 : r;    this.vertexes = 0;    for(alpha = 0; alpha

For cross-origin data in canvas, add the following attribute to the

Web Workers allow for long-running scripts that are not interrupted by scripts that respond to clicks or other user interactions and allows long tasks to be executed without yielding to keep the page responsive.Web Workers are background scripts and they are relatively heavyweight and are not intended to be used ... Read More

Yes, it is possible to validate the size and type of input type = “file”. Use jQuery to get the desired result −                                               ... Read More

To render ASP.NET TextBox as HTML5 input type “Number”, set type="number" directly on the textbox.Let us see an example of ASP.NET TextBox −You can also use the following dynamically created the control −TextBox tb = new TextBox(); tb.Attributes.Add("Type", "number");

The date-time format can be changed by using custom HTML5 elements. If we wish to change or override existing Html tags then we can do so with the help of shadow DOM.We can make customizable tags like −Here is an example −However, E10 and older versions do not support customizable ... Read More