To center canvas in HTML 5, include the canvas tag in div tag. Then we can center align the div tag. By doing so, the canvas is also center aligned.Example.                    This is my canvas          

The globalAlpha property returns the transparency value of drawing. The value 1.0 of this property specifies no transparency and the value 0.0 of this property specifies full transparency. Hence, by setting the globalAlpha property to 0.0, we can get a transparent canvas.ExampleYou can try to run the following code to make ... Read More

The required attribute in HTML is used to specify that the element should be filled before the form is submitted. If the field is not filled and the submit button is clicked, an error generates, which fails form submission. The error will be “Please fill out this field”.The required attribute ... Read More

The HTML tag is used within a form to declare an input element - a control that allows the user to input data.The following are the attributes −AttributeValueDescriptionacceptcontent typesSpecifies a comma-separated list of content types that the server acceptsalignleftrighttopmiddlebottomDeprecated − Defines the alignment of contentaltTextThis specifies text to be used in ... Read More

Following example is converting a String to int.ExampleLive Demopublic class Tester {    public static void main(String[] args) {       String intString = "1234";       int value = new Integer(intString).intValue();       System.out.println(value);    } }Output1234

Yes. Create a list to represent a 2D array and then use Collections.shuffle(list).Exampleimport java.util.ArrayList; import java.util.Collections; import java.util.List; public class Tester {    public static void main(String[] args) {       List rows = new ArrayList();       rows.add(new int[]{1, 2, 3});       rows.add(new int[]{4, 5, ... Read More

String.equals() compares the content while == checks whether the references are pointing to the same object or not.ExampleSee the illustration example below −public class Tester {    public static void main(String[] args) {       String test = new String("a");       String test1 = new String("a");   ... Read More

Java is not dependent on any specific operating system so Java applications cannot depend on the platform dependent native libraries, therefore, instead of those Java provides a set of dynamically loaded libraries that are common to modern operating systems.These libraries provide –Container classes and Regular Expressions.Interfaces for tasks that depend ... Read More

Data backup in any RDBMS system comes under Data Persistence layer. SAP HANA holds the bulk of its data in memory for maximum performance, but it still uses persistent storage to provide a fallback in case of failure.When you refer a schema in database, it refers to a namespace in ... Read More

You can get similar things done in many ways. You can use an internal table usage or a range table.Let me showcase an example with an internal table for your reference.SELECT Id, Name, DOB FROM sEmployee INTO CORRESPONDING FIELDS OF TABLE result_tab FOR ALL ENTRIES IN internal_tab // internal_tab is ... Read More