Java Archives - Page 2 of 5

How to initialize an Array in Java in 4 simple ways

15 February 2023 by F.Marchioni

This article discusses about array initialization in Java, showing multiple ways to initialize an array, some of them you probably don’t know! How to declare an array in Java Firstly, some background. Java classifies types as primitive types, user-defined types, and array types. An array type is a region of memory that stores values in … Read more

How to solve the error “invalid target release: 17”

29 May 202313 February 2023 by F.Marchioni

This article shows how to fix the compilation issue that you can hit when the target Java release specified in your Maven configuration does not match the version of Java installed on your system. For example, your environment uses Java 11 but your Maven configuration requires Java 17.

Solving java.lang.OutOfMemoryError: Metaspace error

18 January 202318 January 2023 by F.Marchioni

The java.lang.OutOfMemoryError: Metaspace indicates that the amount of native memory allocated for Java class metadata is exausted. Let’s how this issue can be solved in standalone applications and cloud applications.

How to list Maven local artifacts using JBang

12 January 2023 by F.Marchioni

Listing the available artifacts in your Maven local repository generally requires a Maven project. In this article we will show how to create a simple JBang script to list all dependencies for an artifact in your local Maven repository.

Modern Java interview questions (2023)

11 January 2023 by F.Marchioni

Are you going for a Java Interview ? This article contains a list of Interview Questions which are covering modern aspects of Java, such as Functional programming, Stream API, new IO API and much more.

How to solve the error java.net.SocketException: Connection reset

6 January 2023 by F.Marchioni

A SocketException Connection reset is one of the most common Runtime errors you can find in Java applications. As the name implies, it happens during a network connection which terminates abruptly. In this tutorial we will teach you which is the best action plan to find the root cause of the issue.

Solving java.lang.OutOfMemoryError: java heap space

2 January 2023 by F.Marchioni

This article goes through the most common Java OutOfMemory Error, which happens when you saturate the Java Heap Memory. Within this article we will show how to fix this error depending if you are an application user or an application developer.

How to capture a Thread dump in Java

22 December 2022 by F.Marchioni

In this tutorial, we will learn how to capture a thread dump in Java using different methods depending on the operating system and the environment in which the Java application is running.

Getting started with gRPC on Java

10 November 2022 by F.Marchioni

This article is an introduction to gRPC framework which allows to connect services across data centers using high performance Remote Procedure Calls (RPC). To learn the building blocks of this framework, we will show how to create and test your first gRPC application in Java.