Cómo instalar Apache Kafka en Ubuntu 18.04
El autor seleccionó la Free and Open Source Fundpara recibir una donación como parte del programa Write for DOnations. Apache Kafka es un intermediario de mensajes…
ThreadPoolExecutor – Java Thread Pool Example
URL: https://www.progressiverobot.com/threadpoolexecutor-java-thread-pool-example-executorservice/ Java thread pool manages the pool of worker threads. It contains a queue that keeps tasks waiting to get executed. We can use ThreadPoolExecutor to create thread pool in Java. Java thread pool manages the collection of Runnable threads. The worker threads execute Runnable threads from the queue. java.util.concurrent.Executors provide factory and support […]
Servlet 3 File Upload – @MultipartConfig, Part
URL: https://www.progressiverobot.com/servlet-3-file-upload-multipartconfig-part/ Today we will look into Servlet 3 File Upload Example using @MultipartConfig annotation and javax.servlet.http.Part. Sometime back I wrote an article about [Servlet File Upload](/community/tutorials/servlet-upload-file-download-example "Servlet Upload File and Download File Example") and I used Apache FileUpload API but here we will use Servlet 3 File Upload feature. Servlet 3 File Upload Since […]
Scanner Class in Java
URL: https://www.progressiverobot.com/scanner-class-in-java/ Java Scanner class is part of the java.util package. It was introduced in Java 1.5 release. The Scanner is mostly used to receive user input and parse them into primitive data types such as int, double or default String. It's a utility class to parse data using regular expressions by generating tokens. Java […]
How to Use Lambdas in Java
In this tutorial, you will learn to write your lambda expressions. You will also learn to use some built-in Lambdas available in the java.util.function package.
Java Tutorial, Java EE Tutorials
URL: https://www.progressiverobot.com/java-tutorial-java-ee-tutorials/ — I have written a lot of java tutorials here into many categories. Some of them are in core java tutorial whereas some of them are in J2EE tutorial or Java EE tutorial area. As the number of posts grows, keeping track of them becomes harder. So I have provided a summary post […]
Java i18n – Internationalization in Java
URL: https://www.progressiverobot.com/java-i18n-internationalization-in-java/ Internationalization in Java or Java i18n is a very important feature. Java provides internationalization (i18n) support through resource bundles. Internationalization in Java For making your application support different locales, we need to create locale specific properties file. The file names follow the pattern of bundle name with language code and country code, for […]
Abstract Class in Java
Abstract class in Java is similar to interface except that it can contain default method implementation. An abstract class can have an abstract method without body and it can have methods with implementation also. abstract keyword is used to create a abstract class and method. Abstract class in java can't be instantiated. An abstract class […]
Logger in Java – Java Logging Example
URL: https://www.progressiverobot.com/logger-in-java-logging-example/ Today we will look into Logger in Java. Java Logger provides logging in java programming. Logger in Java  Java Logging API was introduced in 1.4 and you can use java logging API to log application messages. In this java logging tutorial, we will learn basic features of […]
How to Convert String to Array in Java
URL: https://www.progressiverobot.com/string-to-array-java/ Sometimes we have to split String to array based on delimiters or some regular expression. For example, reading a CSV file line and parsing them to get all the data to a String array. In this tutorial, we will learn how to convert String to Array in Java program. String to Array in […]
