InfoWorld

Inheritance in Java, Part 2: Object and its methods

Download the source code for example applications in this tutorial. Created by Jeff Friesen. We’ll look at each of these methods and how you can use them to perform special tasks in the context of ...
TheServerSide

Java's default constructor tutorial

Java's default constructor allows developers to create instances of classes when no other constructors are explicitly defined. The default constructor in Java takes no arguments -- it simply ...
GitHub

Java keywords and Java field names conflict

java.lang.NullPointerException: Attempt to invoke interface method 'org.antlr.v4.runtime.Token org.antlr.v4.runtime.tree.TerminalNode.getSymbol()' on a null object reference java/lang/Class.java 930 ...
TWCN Tech News

Object reference not set to an instance of an object error in Microsoft Visual Studio

In this post, we will show you how to fix Object reference not set to an instance of an object error prompt which you may see in Microsoft Visual Studio. It is a ...
GitHub

InAppBrowserActivity.onCreate NullPointerException - Attempt to invoke virtual method 'java.lang.String android.os.Bundle.getString(java.lang.String)' on a null object reference

Fatal Exception: java.lang.RuntimeException Unable to start activity ComponentInfo{com.example.app/com.pichillilorenzo.flutter_inappwebview.InAppBrowser ...
InfoWorld

Java object queries using JXPath

In a recent project, I needed an easy way to traverse Java object trees and extract values from the objects. Instead of continually going through huge iterator-if-else setups, I wanted a tool that ...
IEEE

Automated reference-counted object recycling for real-time Java

Abstract: We introduce an aspect-oriented reformulation of reference-counting that is particularly well-suited to Java applications and does not share the error-prone characteristic of manual, ...