Overview In this blog, we will cover the following points What is Reflection API? Using private methods Using private fields Sample Code Reflection API Reflection allows instantiation of new objects, invocation of methods, and get/set operations on class variables dynamically at run time without having prior knowledge of its implementation. Read more…
Overview In this blog, we will cover What is JAX-RS JAX-RS Specification Implementation provider for JAX-RS Why follow JAX-RS What is JAX-RS JAX-RS: Java API for RESTful Web Services (JAX-RS) is a Java programming language API spec that provides support in creating web services according to the Representational State Transfer (REST) Read more…
Overview In this blog, we will cover the following points What is JVM, JRE & JDK Steps to run a java file JVM (Java Virtual machine) JVM is responsible for converting Byte code to the machine-specific code. JVM is also platform-dependent and provides core java functions like memory management, garbage Read more…
This blog will cover What is APM Glowroot – Overview Configuration – Embedded Collector Persistence Option with Docker – Central Collector What is APM? In a production environment, it’s important to keep an eye on resource consumption. This is where various monitoring tools come in. When it comes to Java Read more…
We will cover how to use Gson to convert JSON into Java Object and Java Object into JSON in the following points Overview Use Gson – Maven/Gradle Object to JSON JSON to Object TypeToken Custom variables naming JSON with HTML content JSON in Readable format Fields from JSON Include Null Read more…
The static keyword can be used with class, variable, method and block. Static members belong to the class instead of a specific instance, this means if you make a member static, you can access it without an object. Static Block A static block is used for initializing the static variables. Read more…
Memory Leak The standard definition of a memory leak is a scenario that occurs when objects are no longer being used by the application, but the Garbage Collector is unable to remove them from working memory – because they’re still being referenced. As a result, the application consumes more and Read more…
Java Garbage Collection is the process to identify and remove the unused objects from the memory and free space to be allocated to objects created in the future processing. One of the best feature of java programming language is the automatic garbage collection, Garbage Collector is the program running in Read more…
Based on my previous post related to Java Memory Allocation – Heap and Stack let’s see the difference. Heap Space Stack Memory Heap memory is used by all the parts of the application. Stack memory is used only by one thread of execution. Whenever an object is created, it’s always stored in Read more…
When a Java program starts Java Virtual Machine gets some memory from the Operating System. Java Virtual Machine or JVM uses this memory for all its needs. This memory is basically divided into two-part Java Heap Space Java Stack Memory Java Heap Space Java Heap space is used by java Read more…