Assume we have two packages p1 and p2 and classes p1.M1 extended by p2.M12 as follows: Let’s extend M12 with p2.B: This gives a compilation error as method1, being package-protected within p1 is not visible in p2. method2 is visible without problems. Now let’s extend p2.M12 with p1.A: Here I’…
Tag: package
Package org.jboss.netty.channel.socket.nio does not exist
Which JAR contains org.jboss.netty.channel.socket.nio? I’m not using Maven or Ivy, just Ant. Ant compile gives: In the classpath is: The library is netty-4.0.21.Final.tar.bz2, which was downloaded from the official Netty website. I added each JAR from that download to the project. Yes, I realize it̵…
What is the default package name for Struts in struts.xml?
I created a new class called RegesterAction but I didn’t keep this class in any package. How can I configure this class in the struts.xml? Below is the struts.xml file but I’m unable to understand the attribute values “default” and struts-default. Answer The package name is completely …
Import project (jar) into Eclipse
I got a .jar file which I need to import into Eclipse. However, I don’t want to have the jar as a referenced library. I need the .jar to be included like a “normal” project, with packages(!) and .java files. I tried to do the following: New Java project -> Import -> General -> Archi…
Eclipse Java – invalid package name – Reserved words in package name
I am in the middle of an android project and was trying to create a new package in it. Well, Eclipse is not letting me to create it and is showing this error: Invalid package name. ‘new’ is not a valid Java identifier I never knew package name has reserved words, which we cannot use. My questions …
Importing packages in Java
How to import a method from a package into another program? I don’t know how to import… I write a lil’ code: and then, saved it in a folder named “Dan” and I compiled it. The .class file is generated. Then, I wrote this code below: and I saved it outside the folder “DanR…
Is my package structure correct?
What should be the hierarchy of packages? Is this package structure appropriate? Answer I am actually against layer-driven packaging but instead I advice feature-driven approach: The reasoning is: you’ll much more often want to have all classes related to person functionality in one place. Not often you…
Eclipse: The declared package does not match the expected package
I have a problem importing an external project. I go File -> Import… -> Existing Projects into Workspace, choose the folder where the project is located and everything is imported – but the package names of the project don’t seem to be what Eclipse expects. The package names all have a…
Java Package Does Not Exist Error
So there’s a folder /usr/share/stuff in the root directory in stuff there are a bunch of java files with package org.name definitions at the top I am running javac test.java where test.java is in a subdomain I added /usr/share/stuff to my class path. and at the top of test.java I add import org.name But…
Why is my Eclipse Java package being treated as a folder?
My Eclipse Java package is treated as a folder; can anyone suggest what’s wrong? Answer Worst case, you’ll have to delete the folder and recreate as a java package. Save the Java classes somewhere else in your Java project by refactoring Delete the folder and the underlying folder structure Create…