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Articles on Trending Technologies
Technical articles with clear explanations and examples
Which method must be implemented by all threads in Java?
While creating a thread class we must override the run() method of the Thread class. This method provides an entry point for the thread and you will put your complete business logic inside this method.Exampleclass ThreadDemo extends Thread { private String threadName; ThreadDemo( String name) { threadName = name; System.out.println("Creating " + threadName ); } public void run() { System.out.println("Running " ...
Read MoreWhere and how can I create a private constructor in Java?
We can use a private contractor in a Java while creating a singleton class. The Singleton's purpose is to control object creation, limiting the number of objects to only one. Since there is only one Singleton instance, any instance fields of a Singleton will occur only once per class, just like static fields. Singletons often control access to resources, such as database connections or sockets.ExampleThe easiest implementation consists of a private constructor and a field to hold its result, and a static accessor method with a name like getInstance().The private field can be assigned from within a static initializer block ...
Read MoreWhat does the method ensureCapacity(int, minCapacity) do in java?
The ensureCapacity(int minCapacity) method of the class java.util.ArrayList increases the capacity of this ArrayList instance, if necessary, to ensure that it can hold at least the number of elements specified by the minimum capacity argument.Exampleimport java.util.ArrayList; public class ArrayListDemo { public static void main(String args[]) { ArrayList arrlist = new ArrayList(5); arrlist.add(10); arrlist.add(50); arrlist.add(30); arrlist.ensureCapacity(15); for (Integer number : arrlist) { System.out.println("Number = " + number); } } }OutputNumber = 10 Number = 50 Number = 30
Read MoreWhat does the method contains(obj o) do in java?
The contains(Object) method of the java.util.ArrayList class returns true if this list contains the specified element.Exampleimport java.util.ArrayList; public class ArrayListDemo { public static void main(String[] args) { ArrayList arrlist = new ArrayList
Read MoreWhat is the Java Runtime Environment (JRE)?
JRE is Java Runtime Environment and is the machine-specific implementation of JVM. It contains libraries like rt.jar, class loaders etc which are used by JVM.
Read MoreHow to create an unordered_set of user defined class or struct in C++?
In this tutorial, we will be discussing a program to understand how to create an unordered set of user defined class or struct in C++.For this we will create a structure type and then compare two structure types with the function defined by the user to store the hash function.Example#include using namespace std; //defined structure struct Test { int id; bool operator==(const Test& t) const{ return (this->id == t.id); } }; //defined class for hash function class MyHashFunction { public: size_t operator()(const Test& t) const{ ...
Read MoreHow to download all images on a web page at once?
Chrome Extensions eases your work since it provides more features. To download all images on a web page at once, use a Chrome Extension.Download the Image Downloader chrome extension, which is open source. After adding it to Chrome, you can see the following settings −An icon will be visible in the Chrome browser, which is for Image Downloading. Go to the webpage from where you need the images.On reaching the page, click the extension icon as shown below −Click on the images you want to download or select all from the checkbox. After that click Download and that’s it.Here, you ...
Read MoreDoes a favicon have to be 32x32 or 16x16?
A favicon is a little icon visible on the web browser tab, just before the page title. It is generally a logo with a smaller size. The size of a favicon is 16x16, since it also gets displayed next to the URL of your site in a browser's address bar.The 16x16 size for Favicon is suitable for web browsers. But the size varies on multiple platforms and devices. The size is added using the sizes attribute.The preferred size, 1.16x16: For web browser 2. 32x32: or taskbar shortcut icon 3. 96x96: For desktop shortcut iconHere’s how you can add them ...
Read MoreWhat are favicon best practices regarding size and format?
A favicon is a little icon visible on the web browser tab, just before the page title. It is generally a logo with the smaller size.The size of a favicon is 16x16 since it also gets displayed next to the URL of your site in a browser's address bar. It is visible on a users list of bookmarks and easily helps in recognizing the website from a list of websites.Here’s how you can spot the Favicon, The preferred size, 1. 16x16: For a web browser 2. 32x32: or taskbar shortcut icon 3. 96x96: For ...
Read MoreWhat are free Online Favicon Generators?
A favicon is a little icon visible on the web browser tab, just before the page title. It is generally a logo with the smaller size. Creating it is not something to worry about. Online Favicon Generators easily gives options to create a Favicon for free on button click.Let us see some of the free online Favicon Generators, Favicon.ccFavicon.cc is a favicon creator and generator. Design or you can easily import a logo to design your favicon. You can also create animated Favicon here.Favicon-Generator.orgUsing this create and generate icons for the Web, Android, Microsoft, and iOS apps. Choose an image ...
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