CODEWITHSUNDEEP
javaeclipsebuild
pratnala
pratnala

Reputation: 3843

Build and run an Eclipse project manually

I'm doing a Java Project in Eclipse and I wanted to know how to compile these files manually. Right now, Eclipse does the building and running part and I would like to do it manually as we have to submit only the .java files. Now, I know that we have to use the javac and java command but these are throwing up exceptions from Java. So, here is what I have:

Assume the Eclipse project is named as Prj1. So the root directory is Prj1. This has 4 folders, .settings, bin, doc and src. There are also 3 files named .classpath, .project and javadoc.xml. I also have a text file a.txt in this root folder which is read by my java program (not as an input but somewhere in the middle of the execution, the file is opened and its contents are read). The src folder has 5 class files in a package. That is, the src folder has one folder called package1 and inside this, there are 5 class files.

So, how should I build this from the terminal with the javac command and in which folder should I be? Also, where will the bin files be generated and where should I place the a.txt text file which is read during run-time? I am unable to do it on my own. Please help.

Upvotes: 2

Views: 3464

Answers (2)

nansen
nansen

Reputation: 2972

You could use maven as a build tool. The m2e plugin provides easy eclipse integration. You can then create a new maven project from eclipse or create it from the command line and import it as a maven project into your eclipse workspace.

Maven will also make your dependency management more easy.

There are of course alternative build tools, like ant or gradle

UPDATE: regarding the text file: you can treat it as a classpath resource. In eclipse it resides in a source folder. Name it 'resources' for example. From your code refer to it like

InputStream stream = Main.class.getResourceAsStream("/a.txt");

On the command line just copy the text file into the bin folder.

Upvotes: 1

Jon Skeet
Jon Skeet

Reputation: 1503859

It sounds like you should be "in" the src folder and compile it with:

javac -d ../bin package1/*.java

The -d argument specifies the root output directory for classes - the compiler will create a directory hierarchy based on the packages in the source files.

Upvotes: 5

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