Comment installer Java avec Apt sur Ubuntu 20.04
Java et la machine virtuelle Java (JVM) sont nécessaires pour de nombreux types de logiciels, dont Tomcat, Jetty, Glassfish, Cassandra et…
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.
Interface in Java
URL: https://www.progressiverobot.com/interface-in-java/ Interface in java is one of the core concept. Java Interface is core part of java programming language and used a lot not only in JDK but also [java design patterns](/community/tutorials/java/design-patterns). Most of the frameworks use java interface heavily. Interface in Java  Interface in java provide a […]
Java Access Modifiers
URL: https://www.progressiverobot.com/java-access-modifiers/ Java access modifiers are used to provide access control in java. Java provides access control through three keywords – private, protected and public. We are not required to use these access modifiers always, so we have another one namely "default access", "package-private" or "no modifier". Java Access Modifiers ![java access modifiers, protected, private, […]
Java Decompiler Explained: How It Works, Tools, and Use Cases
Learn how a Java compiler works, explore top compiler tools, and understand Java bytecode. A complete guide for beginners and experienced developers.
Java File separator, separatorChar, pathSeparator, pathSeparatorChar
URL: https://www.progressiverobot.com/java-file-separator-separatorchar-pathseparator-pathseparatorchar/ java.io.File class contains four static separator variables. Here we will learn about them and when to use it. File.separator: Platform dependent default name-separator character as String. For windows, it's '\' and for unix it's '/'. File.separatorChar: Same as separator but it's char. File.pathSeparator: Platform dependent variable for path-separator. For example PATH or CLASSPATH […]
Java Memory Management Explained
A Guide to Java memory management. Dive deep into the JVM Memory Model, Heap, Stack, Garbage Collection, and best practices.
Java QR Code Generator – zxing example
URL: https://www.progressiverobot.com/java-qr-code-generator-zxing-example/ Today we will look into the Java QR code generator program. If you are tech and gadget savvy, then you must be aware of the QR code. You will find it everywhere these days – in blogs, websites, and even in some public places. This is very popular in mobile apps, where you […]
Java Singleton Design Pattern Best Practices with Examples
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 […]
Java Thread Dump – VisualVM, jstack, kill -3, jcmd
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 […]
