I am just trying to get PowerMock/EasyMock to work. I am using PowerMock 1.5:
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-easymock-release-full</artifactId>
<version>1.5</version>
<type>pom</type>
</dependency>
Here is my code:
String text = PowerMock.createMock(String.class);
And that's it. When I run the program I get: java.lang.IllegalArgumentException: java.lang.String is not an interface
I've tried doing:
String text = EasyMock.createMock(String.class);
And using the RunWith annotation for PowerMock, but no matter what class I try, I always get this exception. What am I doing wrong?
Works fine with this version of EasyMock:
<dependency>
<groupId>org.easymock</groupId>
<artifactId>easymock</artifactId>
<version>3.1</version>
</dependency>
You should also take a look at how to mock system classes:
http://code.google.com/p/powermock/source/browse/trunk/modules/module-test/mockito/junit4/src/test/java/samples/powermockito/junit4/system/SystemClassUserTest.java?spec=svn1714&r=1714
As soon as I ask.... Using the wrong version of easymock. Needed to upgrade to version 3.0
Also String is a final class, so it doesn't work with string...
EasyMock version less than 3.0 will throw this error. Upgrade you EasyMock version.
Related
I am running a Jenkins job that build a package. However all the tests are failing with the following errors:
**Error Message** :
Could not initialize class mockit.coverage.Metrics
**Stacktrace** :
java.lang.NoClassDefFoundError: Could not initialize class mockit.coverage.Metrics
Pom dependency:
<dependency>
<groupId>org.jmockit</groupId>
<artifactId>jmockit</artifactId>
<version>1.24</version>
<scope>test</scope>
</dependency>
Why are you using jmockit 1.24 (May 2016) and not the current version? It's quite likely you have stumbled into some old bug long since fixed. Upgrade.
http://jmockit.github.io/changes.html
I have tried an payment gateway integration. The code given by the gate way have some error
byte[] hexBytes = new org.apache.commons.codec.binary.Hex().encode(mac.doFinal(data.getBytes()));
The error is
org.apache.commons cannot be resolved to a type
Do you have Apache Commons Codec in your Classpath?
If you are using maven, include it with this snippet:
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.10</version>
</dependency>
Or just drop the .jar from here into your classpath.
This error could raise wether from not importing:
import org.apache.commons.*;
Or from not declaring previously any of the variables you are using here.
Summary
When trying XMLConfiguration configuration = new XMLConfiguration("config/config.xml"); with only commons-configuration 1.10 I need to add more depencies (namely commons-collections not newer than 3.2.1) to my maven setup. Why is that so and why doesn't maven simply resolve all needed dependencies?
Details
I am trying to get commons-configuration to work. First I wanted to use the latest version, 2.0-alpha2, which didn't work well at all since I was unable to configure Maven to download the correct ressources - but that is another story.
After I found out that version 1.10 is in fact "one point ten" (not "one point one zero") and thus the latest version of commons-configuration 1 (and covered by the tutorials), I decided to give it a try instead.
For my maven dependencies (integrated in eclipse) I used:
<dependency>
<groupId>commons-configuration</groupId>
<artifactId>commons-configuration</artifactId>
<version>1.10</version>
</dependency>
However, when trying out this example:
package main;
import java.util.Iterator;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.XMLConfiguration;
public class ConfigurationTest {
public static void main(String... args) {
try {
XMLConfiguration configuration =
new XMLConfiguration("config/config.xml");
Iterator<String> iterator = configuration.getKeys();
while (iterator.hasNext()) {
System.out.println(iterator.next());
}
} catch (ConfigurationException e) {
e.printStackTrace();
}
}
}
with the following config.xml:
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<configuration>
<property>value</property>
<nestedproperty>
<arrayvalue>0,1,2,3,4</arrayvalue>
<property>anothervalue</property>
</nestedproperty>
</configuration>
I got the error:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/collections/CollectionUtils
at org.apache.commons.configuration.XMLConfiguration.constructHierarchy(XMLConfiguration.java:640)
at org.apache.commons.configuration.XMLConfiguration.initProperties(XMLConfiguration.java:596)
at org.apache.commons.configuration.XMLConfiguration.load(XMLConfiguration.java:1009)
at org.apache.commons.configuration.XMLConfiguration.load(XMLConfiguration.java:972)
at org.apache.commons.configuration.XMLConfiguration$XMLFileConfigurationDelegate.load(XMLConfiguration.java:1647)
at org.apache.commons.configuration.AbstractFileConfiguration.load(AbstractFileConfiguration.java:324)
at org.apache.commons.configuration.AbstractFileConfiguration.load(AbstractFileConfiguration.java:261)
at org.apache.commons.configuration.AbstractFileConfiguration.load(AbstractFileConfiguration.java:238)
at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.load(AbstractHierarchicalFileConfiguration.java:184)
at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.<init>(AbstractHierarchicalFileConfiguration.java:95)
at org.apache.commons.configuration.XMLConfiguration.<init>(XMLConfiguration.java:261)
at main.ConfigurationTest.main(ConfigurationTest.java:12)
I first hoped they (not me, of course) just screwed up some maven dependencies and since I wouldn't bother which version to use anyway anymore (I didn't get 2.0 to work, remember?) I decided to go down to version 1.9 by replacing the maven dependency with:
<dependency>
<groupId>commons-configuration</groupId>
<artifactId>commons-configuration</artifactId>
<version>1.9</version>
</dependency>
That solved the problem pretty well, the test case is running:
property
nestedproperty.arrayvalue
nestedproperty.property
But when I tried to implement a similar example to the one referenced in Very simple Apache-commons configuration example throws NoClassDefFoundError and its follow-up question I got the exact same error which is referenced there - but the solution, importing org.apache.commons.beanutils.PropertyUtils is not working as I am missing the beanutils. So basically by downgrading I just switched from the error of missing the collections to missing beanutils.
There is a dependency overview where you can see which dependencies are used when you do what. I was a bit suprised to learn that version 1.10 now used other dependencies (namely the CollectionUtils) than 1.9 did in the constructor call. Since there were dependency problems in 1.10 as well as in 1.9 I just sticked to the newer version.
I found the CollectionUtils located in the following artifact (as I was pointed there by its maven repository):
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.0</version>
</dependency>
Sadly that one (not obvious to me at first) doesn't define the class CollectionUtils in the package collections, but in the package collections4. It was hinted at this problem on the dependency overview, but they only mentioned possible problems with earlier versions... I appeared to be at a point of not thinking much about it anymore but simply changed the dependency to:
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.1</version>
</dependency>
I got everything to work (more or less, but the Exceptions I get now are not anymore depending on missing class definitions) after using these dependencies:
<dependencies>
<dependency>
<groupId>commons-configuration</groupId>
<artifactId>commons-configuration</artifactId>
<version>1.10</version>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.1</version>
</dependency>
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.9.2</version>
</dependency>
</dependencies>
Why do I have to add the dependencies myself? I thought the whole point in using maven is to avoid having to do such things and in terms of javadocs and source files it does a pretty good job.
By now I am convinced that the dependencies are not included in the hierarchy by design (is that so?), probably to avoid overhead. However is there a way to either simply get all dependencies at once or even better to get all dependencies I need? And why is it designed this way?
If we analyse commons-configuration's POM we see that the commons-collections dependency is optional:
<dependencies>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.1</version>
<optional>true</optional>
</dependency>
...
Furthermore, from the Maven docs:
If a user wants to use functionality related to an optional
dependency, they will have to redeclare that optional dependency in
their own project.
This issue is explained on the Runtime dependencies page of the Commons Configuration website.
Quoting from that page:
A lot of dependencies are declared in the Maven POM. These are all needed during compile time. On runtime however you only need to add the dependencies to your classpath that are required by the parts of the Commons Configuration package you are using. The following table helps you to determine which dependencies you have to include based on the components you intend to use.
The other answers explain why this works from a Maven perspective. This answer is intended to provide a defence, of sorts, to the Commons Configuration folks. They did at least warn you!
In cases where the dependencies are on other Apache Commons components, they've taken the time to test with a variety of versions and have posted information on compatibility at the bottom of that page.
Maven tries to resolve all necessary dependencies for a library you're using in your pom. Well sometimes you have some dependencies which are only necessary for some specific features and you don't want to force the user of your dependency to download it if he doesn't use it. Then you're declaring your dependency as optional. This happened with commons-collections within commons-configuration. See commons-configuration-pom here
Using Netbeans IDE 8.0.2 and JDK8, when I try to generate a PDF report i get this error:
The type java.lang.CharSequence cannot be resolved. It is indirectly referenced from required .class filesvalue = ((java.lang.String)field_type.getValue()).contentEquals("XML"); //$JR_EXPR_ID=26$
This error occurs everytime I use this expression $F{type}.contentEquals("XML") or even the .equals expression.
With JDK6 it doesn't happen.
I've searched the web and I find a fix for this but for ecliplse in this url: https://community.jaspersoft.com/jasperreports-server/issues/3498
My dependencies are:
<dependency>
<groupId>net.sf.jasperreports</groupId>
<artifactId>jasperreports</artifactId>
<version>5.6.0</version>
</dependency>
<dependency>
<groupId>net.sf.jasperreports</groupId>
<artifactId>jasperreports-fonts</artifactId>
<version>5.6.1</version>
</dependency>
Well i didnt find a perfect solution for this, although to walktrough this issue I used .endsWith() instead of .equals. Works in this situation.
I'm trying to use EventBus of Google's Guava libraries.
From Guava's documentation it should be easy to instantiate an EventBus object.
My code:
package test;
import com.google.common.eventbus.EventBus;
public class Test {
public static void main(String[] args) {
EventBus bus = new EventBus("Sample");
}
}
I'm getting this error:
Exception in thread "main" java.lang.NoSuchMethodError: com.google.common.base.Objects.firstNonNull(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
at com.google.common.cache.CacheBuilder.getKeyStrength(CacheBuilder.java:355)
at com.google.common.cache.CustomConcurrentHashMap.<init>(CustomConcurrentHashMap.java:206)
at com.google.common.cache.ComputingCache.<init>(ComputingCache.java:39)
at com.google.common.cache.CacheBuilder.build(CacheBuilder.java:569)
at com.google.common.eventbus.EventBus.<init>(EventBus.java:156)
at test.Test.main(Test.java:7)
Java Result: 1
I've tried with Guava 10.0, 11.0 and 12.0 and always the same error. I'm on OSX Lion and I'm using Netbeans 7.1: I've tried both Java 6 (32 and 64bit) and Java 7: no improvements. On google i can't find anything. Is it a problem with Guava? Or, as usually, am I missing something?
Best regards,
Alessandro
To expand on what #biziclop said, you most likely have both a recent version of Guava and either google-collect or a version of Guava prior to 3.0 on your classpath. Objects.firstNonNull was added in 3.0, suggesting that an old version of that class is being loaded.
I had the same problem. I was using google-collections 1.0 where guava is v11. This problem went away after I upgraded to
<!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>19.0</version>
</dependency>
from
<dependency>
<groupId>com.google.collections</groupId>
<artifactId>google-collections</artifactId>
<version>1.0</version>
</dependency>