I need to make a GUI Application for my class , so I want to make sure I can transfer a netbeans project using the GUI Builder (I know how to make it without it, but that's more time consuming and I think it would look neater without me guessing coordinates etc. and I was use to the netbeans GUI builder) from netbeans onto unix and compile it. So here's what I did I made a new JFrame form (using netbeans GUI Builder) called StartFrame.java and another called MenuFrame.java. (keep in mind that it ran with no errors in netbeans) StartFrame creates a new instance of MenuFrame and opens it on it's first run. So I transferred all of it onto the unix system. So at first I tried compiling it, but of course it got errors, saying that org.jdesktop... isn't found.
Okay so I've already searched stackoverflow and the web for this. So I ended up getting the swing-layout-1.0.4.jar from the libraries in netbeans.
I'm kind of new at compiling from command line, but I put them all in the same folder, and while I was in that directory.
I did
javac StartFrame.java -cp swing-layout-1.0.4.jar
and I got the error that NoClassDefFoundException: MenuFrame even though it is in the same folder. So then I tried
javac StartFrame.java MenuFrame.java -cp swing-layout-1.0.4.jar
and it compiled fine with no errors. So then It created 6 files StartFrame.class StartFrame$1.class StartFrame$2.class StartFrame$3.class StartFrame$4.class MenuFrame.class
I tried running it with
java -cp swing-layout-1.0.4.jar StartFrame
and it had a NoClassDefFoundException: StartFrame. I searched the web for fixes for this and stack overflow and found similar (not exact though) problems like this, but none of those fixed it.
The file dist/README.TXT will tell you how to proceed. Type ant -p at the command line to see that available commands: ant run is usually good.
Addendum:
The machine doesn't have ant installed
That would be unusual, so you should certainly verify it. You may need to add the current directory to the path, e.g.
java -cp .:swing-layout-1.0.4.jar StartFrame
Related
I'm trying to compile a service using a java ant file as appears below:
and my buid-jar.xml looks like this:
the problem i have is that eclipse is not recognizing the enviroment variables and it takes the names literally causing an error on building time:
Both, paths and ant files does exists in these routes in my user folder, but i don't know why this error is happening. I'm using jdk 1.8.0_45.
Any idea? Sorry i had to attach screenshots instead code, but the proxy of the company network that i work for doesn't allow me to navigate on stackoverflow.
I have developed a problem, I cannot resolve.
I am running Net Bean 8.2 Build: 201609300101.
I am running it on a Windows 7 platform.
Yesterday Net Bean worked fine and would generate the jforms for me. Last night something happened and I can no-longer build, compile and run jforms classes.
I can generate and run simple Java programs. I wrote a simple program that just prints "Hello" and that worked.
When I generate a jform, everything looks good in the IDE but it will not build or run.
I get the following error:
c:users\Admin\Documents\Netbeans\KensPanel\nbproject\build-impl.xml:899 Must set src.dir.
None of the NetBeans examples work either and they did yesterday.
In reviewing the posts on the NetBeans forum concerning the problem, I found several that suggested looking in "nbproject directory for a project.properties file. in the file there should be a "build.dir = build" statement. It is there.
I have completely deleted the project and rebuilt the program and that did not work.
I uninstalled the NetBeans program, the JDK and the JRE programs and reinstalled them (JDK & JRE first) and that did not fix the problem.
I put a simple print statement "(System.out.println("Hello");" in the "Public Static void Main(String[] args)" function at the bottom of the KensPanel.java file and the program will compile and print out "Hello" but will not bring up the GUI.
I get the feeling the problem is somehow related to the "ANT" process but anything having anything to do with that is way over my head.
As I stated earlier, the program worked yesterday afternoon. Last night, the IDE decided that it did not want to play any more and I have not been able to find the problem. I am at a loss.
I am real new to the program and for that matter, Java in general. I really need help.
Ken
I think I found my own answer. At least, I got around the problem.
In the New Java application screen, I had left the "create Main Class" box checked. I found in the NetBeans tutorial, the tutorial stated that I needed to "un-check" the box. When I did that, at least my application works. I haven't tried the examples yet.
Moving on to the next learning task.
Ken
I have a java selenium QA project where we use ant and testng via the powershell terminal. What I would like help with is creating a redirect if a tester enters a typo in the terminal.
If I am in the run directory and I simply type ant, it will run the default.xml file listed in the build.xml file which is what I expect.
If I enter an actual ant command with a typo though:
ant -Dtestdir= c:\dev\qa\src\tests -Dtestxml=blablabla
it will attempt to run every test.xml file in the test directory. This is especially problematic because most of the those test.xml files call java classes that contain #Factory and #Dataprovider(s) and they allocate everything at once which just causes everything to fail.
What I would like is a way to tell ant if the input is erroneous, then run the default.xml file(which I have configured to populate an html error page). I've been reviewing both testng and ant docs and I'm not finding a solution, so your guidance would be appreciated.
Other than this one issue, the system works very well.
After digging around a bit more and learning how to ask the question properly, I found 2 great examples here on SO.
1) Create an additional ant target that checks for the existence of the file the user has typed. And add it to the depends attribute of the main target , and also adding the if attribute.
Example
2) Use the Ant fail task and fail the build (with a message) if the file is not available. I prefer this one because the tester can get some feedback.
Example 2
Java problems
I am a student of Java. I managed to write about 15 Java programs so far and get them working on the PC. But I have not yet written a init() method like my latest assignment requires in order to initialize some instance variables. The compiler tells me that my init() method is attempting to override the final init() method in the acm.program. Isn’t that what an init() method is supposed to do? After exhausting all avenues on PC for the last week, I thought maybe it is an Eclipse problem on the PC. All the example code in the Java documentation shows little Mac windows. So I thought I would try moving my code to a Mac running Lion OS 10.7.2.
Switching to MAC environment.
The Mac claims to have Java installed but I think it’s just the run time environment, not a development environment. All I could find for applications is the Java VisualVM, which I assume is the virtual machine so there is no java development software. So… I downloaded Eclipse for Mac from Stanford’s website and got Eclipse IDE for Java Developers Version: Helios Service Release 2 and tried to run a simple program which included an import statement.
The import acm.program.*; statement is giving the compiler a problem: "acm cannot be resolved”. After researching this I think the problem is I have not downloaded the acm.jar archive and added that to my build path. Why this isn’t already done for me, as part of Eclipse I have no clue. I guess everything has to be difficult.
So I downloaded the acm.jar archive and it’s sitting in my download folder. I tried double clicking it and thankfully the mac won’t execute it. I tried dragging it into my source folder in Eclipse and then adding it to the build path. Once in the build path, Eclipse tells me the jar is missing. So I removed it from the build path and instead from inside Eclipse went to Properties/Java Build Path/Libraries/add External JARS… and navigated to my downloads folder where the acm.jar folder is to select the JAR. However, Eclipse seems to be looking for a .jar;.zip file, which there are none because my Mac helpfully already unzipped the folder. So I changed the open window to look for all files (.) and now I see individual .java files that are too numerous to add to the build path individually.
So back to the PC and download the acm.jar zip file and copy it over to the Mac in unzipped form and again add it to the build path as a zip file. This resolved the compiler error and my simple program executed on the Mac!
Next I will try my program with the init() method to see if that now works. Nope. Same problem on the Mac. This init method causes the following error: Multiple markers at this line
overrides acm.program.Program.init
Cannot override the final method from
Program
public void init() {
canvas = new HangmanCanvas();
add(canvas);
}
Does it have to be this hard or am I missing something?
Generally Macs have the whole JDK installed. Eclipse is nice, though.
This "acm" package isn't installed because it's not any kind of standard thing; this is like asking why your refrigerator doesn't come with asparagus already in it.
That last dialog was the right one; you need the original jar file. Try again, right-click and "Save As..." the link to save the file from your browser.
See 3. I find it particularly funny that anybody would use a Windows computer to make up for shortcomings of a Mac; in reality the Mac is infinitely more flexible and more powerful.
If you got a message that complains you're trying to override a final method, then you are indeed trying to do something wrong; final actually means "You're not allowed to override this." Perhaps you didn't fully understand the instructions for the assignment.
It gets better, I promise. Just be sure to use each of these annoyances as a learning experience.
There is no reasons why Java for the Mac would be any better than Java for the PC. The language and tools should work the same ... assuming that you are using the same versions of the language and similar versions of the tools.
Your problem with init is nothing to do with PCs versus Macs. So don't waste your time switching platforms to try to fix it. You need to figure out what the
On the face of is, the compiler / IDE is telling you the truth. Java won't let you override a final method. In fact the whole point of declaring a method to be final is to prevent overloading.
However, this does not make sense. According to the documentation I found here, the acm.program.Program.init() method is designed to be overridden. So why won't it let you?
I suspect that the cause of your problems is that you've downloaded or been given a copy of the JAR file that someone has messed around with. Someone has changes the method to be final (for some reason best kown to themselves), compiled it and put it up for people to download. Google is not always your friend ...
So, what I suggest you do is review all of the handouts and the files that were provided to find either the copy of the JAR that is provided, or the instructions on WHERE to download it from. Then replace the copy of the JAR you are currently using with the recommended one.
Why this isn’t already done for me, as part of Eclipse I have no clue. I guess everything has to be difficult.
How is Eclipse supposed to know what this "acm" stuff is? Which version you require? Where to download it from?
I developed a simple scala app that uses casbah to query the DB for the command line argument passed to it. For example
$ querydb.scala execution 10
it will run a casbah query to find 10 records matching execution in mongo. Now i have two questions.
1) How do i test this in my local. If i click execute in intellij it is just running the program, i am not able to pass command line arguments to my program.
2) How do i deploy it to run on my server, it is just going to used as console app in my ubuntu server, but im not sure how i should deploy this, which files i should put up on the server and how do i execute it in server, and stuff like that.
Any pointers would be useful for me.
or try to use sbt, IDEA has a plugin with sbt, the wiki of it has an explanation on how to use it.
I usually use sbt directly in Terminal instead of running in IDE.
1) First you need to find "Select Run/Debug Configuration" button at the top of your screen
Click on it and choose edit
Create new one, if you haven't got it yet.
Your program parameters should be written in "Program parameters" field
2) Compile your .scala files with scalac and you'll got .class files.
Then deploy it, as you usually do with java code. Hence you don't need to install scala on target machine - all you need is JDK.