URL: https://www.progressiverobot.com/java-singleton-design-pattern-best-practices-examples/ Introduction _Java Singleton Pattern_ is one of the _Gangs of Four Design patterns_ and comes in the _Creational Design Pattern_ category. From the definition, it seems to be a straightforward design pattern, but when it comes to implementation, it comes with a lot of concerns. In this article, we will learn about singleton […]
URL: https://www.progressiverobot.com/java-thread-dump-visualvm-jstack-kill-3-jcmd/ Java Thread dump is list of all the threads active in the JVM. Java Thread Dump Java thread dump is very helpful in analyzing bottlenecks in the application and [deadlock](/community/tutorials/deadlock-in-java-example "Java Deadlock") situations. Here we will learn multiple ways through which we can generate thread dump for a java program. These instructions are […]
URL: https://www.progressiverobot.com/java-zip-file-folder-example/ Today we will look into java zip file example. We will also compress a folder and create zip file using java program. Java ZIP java.util.zip.ZipOutputStream can be used to compress a file into ZIP format. Since a zip file can contain multiple entries, ZipOutputStream uses java.util.zip.ZipEntry to represent a zip file entry. Java […]
URL: https://www.progressiverobot.com/junit-display-name-displayname/ JUnit @DisplayName annotation is used to provide a custom name for the test class and test methods. We can use spaces, special characters, and even emojis in the display name. JUnit Display Name Example By default, [JUnit](/community/tutorials/junit5-tutorial) reporting prints the class name and method name in the IDE test report. We can use […]
URL: https://www.progressiverobot.com/mockito-mock-examples/ Mockito mocking framework provides different ways to mock a class. Let's look at different methods through which we can mock a class and stub its behaviors. Mockito mock method We can use [Mockito](/community/tutorials/mockito-tutorial) class mock() method to create a mock object of a given class or interface. This is the simplest way to […]
![Understanding public static void main(String[] args) in Java — step-by-step Programming tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/public-static-void-main-string-args-java-main-method-91544-featured.png "Understanding public static void main(String[] args) in Java 6")
Learn what public static void main(String[] args) means in Java. Understand each keyword’s purpose and how the main method powers Java programs.
URL: https://www.progressiverobot.com/soap-webservices-in-java-example-eclipse/ Soap Webservices in java can be developed in may ways. We learned about [JAX-WS SOAP Web Services](/community/tutorials/jax-ws-tutorial) in our last tutorial, today we will learn how we can create SOAP web service and it's client program using Eclipse. Here we will not use JAX-WS, we will be using Apache Axis that is integrated […]
Singleton is one of the most widely used creational design pattern to restrict the object creation by applications. In real world applications, resources like Database connections or Enterprise Information Systems (EIS) are limited and should be used wisely to avoid any resource crunch. To achieve this, we can implement Singleton design pattern to create a wrapper class around the resource and limit the number of object created at runtime to one.
Today we will look into Bridge Design Pattern in java. When we have interface hierarchies in both interfaces as well as implementations, then bridge design pattern is used to decouple the interfaces from implementation and hiding the implementation details from the client programs. Bridge Design Pattern Just like [Adapter pattern](/community/tutorials/adapter-design-pattern-java "Adapter Design Pattern in Java […]
Composition in java is the design technique to implement has-a relationship in classes. We can use [java inheritance](/community/tutorials/inheritance-java-example "Inheritance in Java Example") or Object composition in java for code reuse. Composition in Java  Java composition is achieved by using instance variables that refers to other objects. For […]
Progressive Robot: Your Gateway to Comprehensive IT Solutions — Specializing in Web Development, Mobile App Development, and Expert IT Services.
© All Copyright by Progressiverobot.com
VAT Number ( 506152326 )
