Tutorial by Examples: e

//Creates a Random instance with a seed of 12345. Random random = new Random(12345L); //Gets a ThreadLocalRandom instance ThreadLocalRandom tlr = ThreadLocalRandom.current(); //Set the instance's seed. tlr.setSeed(12345L); Using the same seed to generate random numbers will return the sa...

Time series data can be stored as a ts object. ts objects contain information about seasonal frequency that is used by ARIMA functions. It also allows for calling of elements in the series by date using the window command. #Create a dummy dataset of 100 observations x <- rnorm(100) #Convert ...

Jetty is a Java-based, open-source project providing a HTTP server/client and javax.servlet container. Jetty also provides support for HTTP/2, JMX, JNDI, OSGi JAAS and other integrations. Jetty can be deployed as a standard distribution package or as an embeddable web server, allowing users to custo...

The current release version of Jetty is 9.4. Support is still provided for Jetty 9.2 and 9.3, and maintenance releases are provided for Jetty 7 and Jetty 8 when needed. The most up-to-date distributions can be found on the Jetty Downloads page. It is worth noting that current releases of Jetty requ...

Add below entries in pom.xml. <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-web</artifactId> <version>3.1.0.RELEASE</version> </dependency> <dependency> <groupId>org.springfr...

Bytecode is the set of instructions used by the JVM. To illustrate this let's take this Hello World program. public static void main(String[] args){ System.out.println("Hello World"); } This is what it turns into when compiled into bytecode. public static main([Ljava/lang/String...

Firstly the classes from the jar need to be loaded. We'll use three methods for this process: loadClasses(File) readJar(JarFile, JarEntry, Map) getNode(byte[]) Map<String, ClassNode> loadClasses(File jarFile) throws IOException { Map<String, ClassNode> classes = new HashMap&...

/** * Load a class by from a ClassNode * * @param cn * ClassNode to load * @return */ public static Class<?> load(ClassNode cn) { ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES); return new ClassDefiner(ClassLoader.getSystemClassLoader()).get(cn....

public static void main(String[] args) throws Exception { File jarFile = new File("Input.jar"); Map<String, ClassNode> nodes = JarUtils.loadClasses(jarFile); Map<String, byte[]> out = JarUtils.loadNonClassEntries(jarFile); Map<String, String> map...

Objects come in their own class, so a simple example would be a car (detailed explanations below): public class Car { //Variables describing the characteristics of an individual car, varies per object private int milesPerGallon; private String name; private String color; ...

When a page is part of a series of articles, for instance, one can use prev and next to point to pages that are coming before and after. <link rel="prev" href="http://stackoverflow.com/documentation/java/topics"> <link rel="next" href="http://stackover...

Preconnect The preconnect relationship is similar to dns-prefetch in that it will resolve the DNS. However, it will also make the TCP handshake, and optional TLS negotiation. This is an experimental feature. <link rel="preconnect" href="URL"> DNS-Prefetch Informs bro...

Suppose you have a hot observable for which you would love to keep the count of. It could be the IObservable<StockTick> and you want to keep count of the average trade volume. You can use Scan for that. var tradeVolume = stockTicks.Select(e => e.Price) .Scan(0.0m, (aggregated, newtick...

Development and Evaluation Installations Alfresco provides a number of different installers for different operating systems and platforms. However, these installers are not recommended for production environments. https://www.alfresco.com/alfresco-community-download https://sourceforge.net/projec...

# Process substitution with paste command is common # To compare the contents of two directories paste <( ls /path/to/directory1 ) <( ls /path/to/directory1 )

To write data to a file using Channel we need to have the following steps: First, we need to get an object of FileOutputStream Acquire FileChannel calling the getChannel() method from the FileOutputStream Create a ByteBuffer and then fill it with data Then we have to call the flip() method of ...

We can use PrintStream class to write a file. It has several methods that let you print any data type values. println() method appends a new line. Once we are done printing, we have to flush the PrintStream. import java.io.FileNotFoundException; import java.io.PrintStream; import java.time.Local...

When you run sails lift with blueprints enabled, the framework inspects your controllers, models, and configuration in order to bind certain routes automatically. These implicit blueprint routes allow your app to respond to certain requests without you having to bind those routes manually in your ...

Blueprint actions (not to be confused with blueprint action routes) are generic actions designed to work with any of your controllers that have a model of the same name (e.g. ParrotController would need a Parrot model). Think of them as the default behavior for your application. For instance, if...

Global basis: Blueprint API configuration is defined in /config/blueprint.js file. You can enable or disable all three types of blueprint routes for all controllers from there. As example, if you want to disable blueprint shortcut routes for all of your controllers but want to keep both acti...