[Java] Trouble Installing Google Guice

[Skootle]

Hi,

I'm trying to play around with Google Guice and I can't seem to get it set up properly.

I have installed it as follows:

sudo apt-get install libguice-java libguice-java-doc

Following this tutorial, I am trying to compile this simple program:

import com.google.inject.*;

public class GumRunner {

   public static void main(String args[]){

      Injector injector = Guice.createInjector();
     System.out.println(injector);

  }
}

and I get the following error when compiling:

$ javac GumRunner.java 
GumRunner.java:1: error: package com.google.inject does not exist
import com.google.inject.*;
^
GumRunner.java:7: error: cannot find symbol
      Injector injector = Guice.createInjector();
      ^
  symbol:   class Injector
  location: class GumRunner
GumRunner.java:7: error: cannot find symbol
      Injector injector = Guice.createInjector();
                          ^
  symbol:   variable Guice
  location: class GumRunner
3 errors

Any ideas as to why this isn't working? I'm a newbie with Java, so please be gentle!

[spjackson]

I don't know Guice, but that first error indicates that whatever .jar(s) are needed are not on the default classpath.

If you try

javac -verbose GumRunner.java

it should tell you where it's looking.

The tutorial you link to compiles with a classpath specified, but that's for Windows.

I think that you'll need something like:

javac -classpath /usr/share/java/guice.jar GumRunner.java

[Skootle]

Hi Spjackson,

Thanks, this really helped. Just had to add . and /usr/share/java/javax.inject.jar to the classpath, i.e.

javac -cp '.:/usr/share/java/guice-3.0.jar:/usr/share/java/javax.inject.jar' GumRunner.java

Thanks again