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We can download a web page using its URL in Java. Following are the steps needed.Create URL object using url string.Download webpage in JavaCreate a BufferReader object using url.openStream() method.BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()));Create a BufferWriter object to write to a file.BufferedWriter writer = new BufferedWriter(new FileWriter("page.html"));Read each line using BufferReader and write using BufferWriter.String line; while ((line = reader.readLine()) != null) { writer.write(line); }Following is the complete program to download a given URL page at current location.import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileWriter; import java.io.IOException; import java.io.InputStreamReader; import java.net.URL; public class Tester { public static void main(String ... Read More
Value parametersThe value parameters copy the actual value of an argument into the formal parameter of the function. In this case, changes made to the parameter inside the function have no effect on the argument.This is the default mechanism for passing parameters to a method. In this mechanism, when a method is called, a new storage location is created for each value parameter.The values of the actual parameters are copied into them. Hence, the changes made to the parameter inside the method have no effect on the argument.Reference ParametersA reference parameter is a reference to a memory location of a ... Read More
To add easing effect to your animation, use the animation speed properly to form it a perfect animation for the web page. Do not speed up animation and you should know where to stop it while using animate().Here for our example, we have a button that takes you to a textarea to add an answer: Add answer Now set the fade out property properly to set easing effect.Example Live Demo $(document).ready(function(){ $('body').on('click', '#answer', function() { var container = $('.new-answer'); ... Read More
To convert trigonometric angles in Radians, multiply by Math.PI/180. This will convert degrees to radians.The following is the code −Exampleusing System; class Program { static void Main() { Console.WriteLine(Math.Cos(45)); double res = Math.Cos(Math.PI * 45 / 180.0); Console.WriteLine(res); } }Above, we converted using the following formulae −Math.PI * angle / 180.0
Runtime Polymorphism in Java is achieved by Method overriding in which a child class overrides a method in its parent. An overridden method is essentially hidden in the parent class, and is not invoked unless the child class uses the super keyword within the overriding method. This method call resolution happens at runtime and is termed as Dynamic method dispatch mechanism.ExampleLet us look at an example.class Animal { public void move() { System.out.println("Animals can move"); } } class Dog extends Animal { public void move() { System.out.println("Dogs can walk and ... Read More
To access elements from a rectangular array, you just need to set the index of which you want to get the element. Multi-dimensional arrays are also called rectangular array −a[0, 1]; // second elementThe following is an example showing how to work with a rectangular array in C# and access an element −Exampleusing System; namespace Demo { class Program { static void Main(string[] args) { int[, ] a = new int[3, 3]; a[0, 0]= 10; a[0, 1]= 20; ... Read More
To convert Upper case to Lower case, use the ToLower() method in C#.Let’s say your string is −str = "TIM";To convert the above uppercase string in lowercase, use the ToLower() method −Console.WriteLine("Converted to LowerCase : {0}", str.ToLower());The following is the code in C# to convert character case −Exampleusing System; using System.Collections.Generic; using System.Text; namespace Demo { class MyApplication { static void Main(string[] args) { string str; str = "TIM"; Console.WriteLine("UpperCase : {0}", str); // convert to lowercase Console.WriteLine("Converted to LowerCase : {0}", str.ToLower()); Console.ReadLine(); } } }
First, define and initalize an array −int[] p = new int[3] {99, 92, 95};Now, display the array elements −for (j = 0; j < 3; j++ ) { Console.WriteLine("Price of Product[{0}] = {1}", j, p[j]); }To acess any element, just include the index of the element you want like this −p[2];The above is to acess the 3rd element.Now let us see the complete code −Exampleusing System; namespace Program { class Demo { static void Main(string[] args) { int[] p = new int[3] {99, 92, 95}; int j; for (j = 0; j < 3; j++ ) { Console.WriteLine("Price of Product[{0}] = {1}", j, p[j]); } // access int e = p[2]; Console.WriteLine("Product 3rd price: "+e); Console.ReadKey(); } } }
The peer to peer computing architecture contains nodes that are equal participants in data sharing. All the tasks are equally divided between all the nodes. The nodes interact with each other as required as share resources.A diagram to better understand peer to peer computing is as follows −Characteristics of Peer to Peer ComputingThe different characteristics of peer to peer networks are as follows −Peer to peer networks are usually formed by groups of a dozen or less computers. These computers all store their data using individual security but also share data with all the other nodes.The nodes in peer to ... Read More
C# exceptions are represented by classes. The exception classes in C# are mainly directly or indirectly derived from the System.Exception class.You can also define your own exception. User-defined exception classes are derived from the Exception class.The following is an example −Exampleusing System; namespace UserDefinedException { class TestTemperature { static void Main(string[] args) { Temperature temp = new Temperature(); try { temp.showTemp(); } catch(TempIsZeroException e) { Console.WriteLine("TempIsZeroException: {0}", e.Message); ... Read More