Weblogic Start Failed java.lang.NoClassDefFoundError: weblogic/Server Hot Network Questions What are the conditions necessary for a programming language to have no undefined behavior?when i open apache-jmeter-3.1 and right click the test-plan button,it turns out to be no response and throws lists of errors in the jmeter.log as follows 2016/12/17 16:24:30 ERROR - jmeter.JMeter:20. I'm working on XUbuntu 13.04 and developing swing applications. As I just wanted to try that application I ran into java.lang.NoClassDefFoundError: Could not initialize class java.awt.Toolkit on startup. I've found several questions about server/client vms and noticed that I have a server VM and that for Linux 64 there is no client VM anymore.Jun 18, 2020 · Prerequisites I'm trying to rewrite test written with Mockito to avoid open Kotlin classes. For that I use Annotations API as most similar to those in Mockito. In example on website I see an @InjectMockKs over TrafficSystem class without... Nov 1, 2020 · Today, I updated it and everything went downhill. I've been having different errors throughout my attempt to fix this. First error: could not initialize class org.codehaus.groovy.runtime.invokerhelper. Second error: could not initialize class org.codehaus.groovy.reflection.ReflectionCache. Anyways, I've been researching and I've done the following. 1. I've decided to post this question because it took me the whole morning to find a solution... especially because the most common reason for java.lang.NoClassDefFoundError: Could not initialize class weblogic.jndi.Environment to occur, is when weblogic.jar and wlfullclient.jar aren't being properly located by any of IDE, WebApp, or WL.This is another common reason for java.lang.NoClassDefFoundError, when your class performs some static initialization in a static block like many Singleton classes initialized itself on the static block to take advantage of thread-safety provided by JVM during the class initialization process, and if static block throws an Exception, the class ... Jul 25, 2019 · I installed apache-jmeter-5.1.1 and java 1.8.0_221 (8), and was walking through the getting started guide to build a web test plan in the GUI. But when I click save to save the Test Plan I receive the below error: Uncaught Exception java.lang.NoClassDefFoundError: Could not initialize class org.apache.jmeter.gui.util.FileDialoger. As you may see first exception that we have NPE at (Plugins.java:17) and I think it's somehow connected with ClassLoaders. I can get same issue for jUnit module also. I can get same issue for jUnit module also.I had this issue when working on a spring-boot application. The problem was caused by hibernate-validator 6.0.11 which seems to have an erroneous dependency on javax validation-api 2.0.1.Final.This is possible since internal builds may live in another build environment (classpath/target platform). The most common reasons for NoClassDefFoundErrors are exceptions thrown in static initializers of referenced classes (ExceptionInInitializer as root cause) and ClassNotFoundExceptions for referenced classes.Sep 4, 2016 · "java.lang.NoClassDefFoundError: Could not initialize class org.apache.xml.security.Init" the confusing part is if I remove the xmlsec.jar from libs, it still knows the . import "org.apache.xml.security.Init" but when I delete that and try to rewrite the same: import "org.apache.xml.security.Init" Apr 26, 2017 · The solution that worked for me is to convert your object to a class that extends Serializable and just instantiate it where you need it. So basically, if I'm not wrong you have. object test { def foo = ... } which would be used as test.foo in your main, but you need at minimum. class Test extends Serializable { def foo = ... I have the following code that's trying to establish a connection to a remote database. It's throwing an exception, and I can't figure out why. import java.util.List; import java.util.Arr...Could not initialize class org.apache.jmeter.protocol.http.proxy.ProxyControl Hot Network Questions Looking for a series of books that starts with a girl looking in her fridge, realizing she doesn’t like what’s in there and switches itTeams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about TeamsSame goes for the name of the class inside the file. 2) Location: Make sure the WEB-INF you put the file in is the same WEB-INF used to run the server. 3) You are putting the MyClassR.class file in the classpath, and not MyClassR.java right? 4) You put the package statement at the top of the class definition. Mar 30, 2017 · Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams 37.1k 15 99 111 asked Sep 6, 2011 at 20:12 Leon 8,151 11 45 51 Is the appropriate directory structure in your jar to match the class package? – John B Sep 6, 2011 at 20:14 need to see some source, many things can cause this. for example, a 'package' statement but the file not actually residing in the corresponding path – jcomeau_ictxI had this issue when working on a spring-boot application. The problem was caused by hibernate-validator 6.0.11 which seems to have an erroneous dependency on javax validation-api 2.0.1.Final. I think you might be missing some bootstrapping of your test class. Do you have annotations on your test case class like this? @RunWith(PowerMockRunner.class) @PrepareForTest(MyFinalClient.class) That'll get powermock to prepare the MyFinalClient class with some bytecode manipulation so that it can properly generate the mock.I have updated my dependecies like you said in your comment and i have this now : org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.If you are using Java 8 Update 151 (8u151) or later, also check this:. New Features New Security property to control crypto policy. This release introduces a new feature whereby the JCE jurisdiction policy files used by the JDK can be controlled via a new Security property.Nov 20, 2020 · I tried copying a bunch of custom plugins into my C:\\apache-jmeter-5.3\\lib\\ext folder. But when I try to open C:\\Projects\\centaurjmeter\\src\\test\\unittests\\mytree\\loadtest.mytree.jmx, I get this err... I have the following code that's trying to establish a connection to a remote database. It's throwing an exception, and I can't figure out why. import java.util.List; import java.util.Arr...1 posted 9 years ago Hi Harry, I have copied the bean in the right folder which is visible to my application. I think Could not initialize class xxx means it was able to access it. In case the class could not be found, it would display java.lang.NoClassDefFoundError: xxx2 Answers Sorted by: 1 This is an old question, but I think it deserves a better answer. There are actually two things going on here. Some time before the exception that the Question is talking about, the JVM has attempted to execute the static initialization for the AccessorFactory class. Could not initialize class org.codehaus.groovy.runtime.InvokerHelper. In a similar question in stack-overflow Android Studio Could not initialize class org.codehaus.groovy.runtime.InvokerHelper it was recommended to . install java jdk-14 ; upgrade to gradle version 6.3; I changed the jdk to 14 in IntelliJ in 2 places:Nov 9, 2022 · What Is java.lang.NoClassDefFoundError? When the Java Runtime runs a Java program, it does not load all the classes and dependencies at once. Instead, it calls upon the Java Classloader to load classes in memory as-and-when-required. While loading a class, if the Classloader cannot find the class’s definition, it throws the NoClassDefFoundError. Oct 1, 2022 · If you are working on spring MVC web application and you are trying to use JSR-303 validation annotations then you might face this exception. Exception stack trace looks like this. Yes, Thrown if the Java Virtual Machine or a ClassLoader instance tries to load in the definition of a class (as part of a normal method call or as part of creating a new instance using the new expression) and no definition of the class could be found.Downloaded apache 3.2.0 the latest one as well as the hadoop file java Java SE Development Kit 17.0.1 is installed too i am not even able to initialize input : import pyspark from pyspark.sql importI could resolve the issue. The problem was the minor version of pdfbox, fontbox and jempbox were not the same. Hence the PDFFont was not initialized, because internally it needs to load the classes of fontbox also and probably there was a mismatch in the version id of the classes4 Answers. This problem is caused by not including the asm dependencies that cglib has. Solution 1: Add the correct versions of asm and asm-util to your classpath. Solution 2: Use the cglib-nodep version (which includes both asm dependencies). I can't thank you enough for your valuable answer for the problem.If you are using Java 8 Update 151 (8u151) or later, also check this:. New Features New Security property to control crypto policy. This release introduces a new feature whereby the JCE jurisdiction policy files used by the JDK can be controlled via a new Security property.Jul 2, 2021 · when we migrated from Oracle JDK-8 to Open JDK-11, Apache POI excel generation has issues tried already -Djava.awt.headless=true org.springframework.web.util.NestedServletException: Handler dispatch Sep 11, 2020 · And I get the following error: java.lang.NoClassDefFoundError: Could not initialize class org.apache.spark.eventhubs.EventHubsConf$ Cluster Configuration: Databricks Runtime Version: 7.0 (includes Apache Spark 3.0.0, Scala 2.12) Driver & Worker Type: 14.0 GB Memory, 4 Cores, 0.75 DBU Standard_DS3_v2; I have installed the following library: Nov 8, 2012 · It seems Apache POI is trying to load the class org.apache.xmlbeans.XMLOptions but it cannot find this class. The message Could not initialize class SomeClass indicates that the JVM has twice tried and failed to load and statically initialize the class SomeClass. In this case, the class in question is org.apache.poi.POIXMLDocument. [Solved] java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.validator.engine.ConfigurationImplOct 20, 2012 · Here's a snippet of how a test calls Order api when it fails. val orderNumber = Order.createOrder () This is the entire stack trace when the test fails: java.lang.NoClassDefFoundError: Could not initialize class com.api.Order$ at com.CreateOrder.setUpOnce (CreateOrder.scala:35) Line 35 in that class, CreateOrder.scala is: Aug 10, 2015 · Spark Error: Could not initialize class org.apache.spark.rdd.RDDOperationScope. I've created a spark standalone cluster on my laptop, then I go into an sbt console on a spark project and try to embed a spark instance as so: val conf = new SparkConf ().setAppName ("foo").setMaster (/* Spark Master URL*/) val sc = new SparkContext (conf) sc ... hibernate -annotation.jar and hibernate-common-annotation.jar are different? i included hibernate-common-annotation.jar but i still getting java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.ejb.Ejb3Configuration. i am using hibernate with jpa specification –I have the following code that's trying to establish a connection to a remote database. It's throwing an exception, and I can't figure out why. import java.util.List; import java.util.Arr...You're probably missing some dependant library. In Eclipse you can look inside the jar file from project explorer and verify that there is a package 'org.apache.axis.client' and it contains class AxisClient. (If you're not in Eclipse then otherwise you can just unpack your jar and see that the class is there - many possibilities for that, you ...I had this issue when working on a spring-boot application. The problem was caused by hibernate-validator 6.0.11 which seems to have an erroneous dependency on javax validation-api 2.0.1.Final. Seems like you are missing a class on your CLASSPATH.That may be caused by various issues, you have to make sure org.owasp.esapi.reference.DefaultValidator is found by the server's CLASSPATH.Sep 23, 2014 · I want to use SAP JCo to select user data for my Java program. But all I got is: Sep 23, 2014 1:34:28 PM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet [ Downloaded apache 3.2.0 the latest one as well as the hadoop file java Java SE Development Kit 17.0.1 is installed too i am not even able to initialize input : import pyspark from pyspark.sql import5 Answers. I think you might be using the wrong version of Java. From the doc: Spark runs on Java 8/11, Scala 2.12, Python 3.6+ and R 3.5+. Python 3.6 support is deprecated as of Spark 3.2.0. Java 8 prior to version 8u201 support is deprecated as of Spark 3.2.0. For the Scala API, Spark 3.2.0 uses Scala 2.12.I am trying to migrate a project from Java8 into Java9 but I am running into the run time exception below, I tried every possible solution suggested by the Stack-overflow community and other blogs ...Could not initialize class org.apache.jmeter.protocol.http.proxy.ProxyControl Hot Network Questions Looking for a series of books that starts with a girl looking in her fridge, realizing she doesn’t like what’s in there and switches it20. I'm working on XUbuntu 13.04 and developing swing applications. As I just wanted to try that application I ran into java.lang.NoClassDefFoundError: Could not initialize class java.awt.Toolkit on startup. I've found several questions about server/client vms and noticed that I have a server VM and that for Linux 64 there is no client VM anymore. Oct 20, 2012 · Here's a snippet of how a test calls Order api when it fails. val orderNumber = Order.createOrder () This is the entire stack trace when the test fails: java.lang.NoClassDefFoundError: Could not initialize class com.api.Order$ at com.CreateOrder.setUpOnce (CreateOrder.scala:35) Line 35 in that class, CreateOrder.scala is: After much searching, I found several instances of this including java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7, but most are older posts on older versions of gradle and groovy or they are related to android. Here is my version info:when we migrated from Oracle JDK-8 to Open JDK-11, Apache POI excel generation has issues tried already -Djava.awt.headless=true org.springframework.web.util.NestedServletException: Handler dispatchJan 11, 2022 · Could not initialize class org.nd4j.linalg.factory.Nd4j in docker container. I am trying to import a KERAS file in a docker container with a program that has the following java code sample: String weights = getFile (_modelFile).getAbsolutePath (); String modelConfiguration = getFile (_configFile).getAbsolutePath (); _model = KerasModelImport ... 37.1k 15 99 111 asked Sep 6, 2011 at 20:12 Leon 8,151 11 45 51 Is the appropriate directory structure in your jar to match the class package? – John B Sep 6, 2011 at 20:14 need to see some source, many things can cause this. for example, a 'package' statement but the file not actually residing in the corresponding path – jcomeau_ictxAug 31, 2012 · hibernate -annotation.jar and hibernate-common-annotation.jar are different? i included hibernate-common-annotation.jar but i still getting java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.ejb.Ejb3Configuration. i am using hibernate with jpa specification – Nov 28, 2017 · Seems like you are missing a class on your CLASSPATH.That may be caused by various issues, you have to make sure org.owasp.esapi.reference.DefaultValidator is found by the server's CLASSPATH. Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about TeamsJasperreport in Java 11. java.lang.NoClassDefFoundError: Could not initialize class net.sf.jasperreports.engine.util.JRStyledTextParser Hot Network Questions Removing certain elements from a list of listsThat also worked just fine for me while using OpenJDK 11. w/o any code modification. I am using java.base.* enc/dec on my fronted class instead of javax.xml.bind.DatatypeConverter, but jjwt (0.9.0) brings it back in when generating the token.Sep 6, 2014 · Part of DBhelper.java class (There are also other static members, the full code is below): public class DBhelper { public static String getString() {return "Hi!";} } And the exception: HTTP Status 500 - Handler processing failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class org.sher.wtpractice.dao.DBhelper Feb 15, 2011 · This is a missing jars in the class path issue. I had this issue and found that with by adding the missing jars to the class path it resolved the issue. From the below article java.dzone.com article I found that the minimal jars necessary are...Now The versions numbers have changed but with these libraries only I managed to get it working. Assuming by 'standard' you both mean Oracle, there is no difference in JSSE between Oracle and OpenJDK (and no difference in the rest of JCE except that in versions before late 2017 Oracle defaulted to the 'limited' crypto policy due to former US export rules, and you needed to add the 'unlimited policy' download, while OpenJDK ddi not).There is a solution to this problem (Cassandra Startup failure on ARM64 machine (java.lang.NoClassDefFoundError: Could not initialize class com.sun.jna.Native)), Soultion suggests changes in cassandra-env.sh. I tried it but it is not working for me. I checked with these options (separately) in cassandra-env.shIm new to Spring, I have just started learning on Spring MVC. I just imported the available small project, but when i run maven on it, it doesn't build successfully.Jul 27, 2020 · 1 Answer. You shouldn't need to import util.HibernateUtil. You may need to either declare the HibernateUtil class as static eg public static class HibernateUtils { and then using by writing HibernateUtil.doAThing (); or instantiate a HibernateUtil Object eg HibernateUtil hibUtil = new HibernateUtil (); and use hibUtil.doAThing (); instead.For ... The only thing I found is that it's hard to diagnose and the following steps might help you recover. Manually remove the workflow packages from JENKINS_HOME/pluginsNov 9, 2022 · What Is java.lang.NoClassDefFoundError? When the Java Runtime runs a Java program, it does not load all the classes and dependencies at once. Instead, it calls upon the Java Classloader to load classes in memory as-and-when-required. While loading a class, if the Classloader cannot find the class’s definition, it throws the NoClassDefFoundError. For this problem not very clear why occur. in order to fix the problem. we can manual use Security.addSecurity method to load jca or analogous component again. like BouncyCastle. now it work fine for me.Jun 18, 2016 · Jasperreport in Java 11. java.lang.NoClassDefFoundError: Could not initialize class net.sf.jasperreports.engine.util.JRStyledTextParser Hot Network Questions Paid beta seems to have skipped large portions of my manuscript 20. I'm working on XUbuntu 13.04 and developing swing applications. As I just wanted to try that application I ran into java.lang.NoClassDefFoundError: Could not initialize class java.awt.Toolkit on startup. I've found several questions about server/client vms and noticed that I have a server VM and that for Linux 64 there is no client VM anymore.Apr 4, 2021 · java.lang.NoClassDefFoundError: Could not initialize class org.jetbrains.kotlin.com.intellij.pom.java.LanguageLevel 5 Difficulties enabling Kotlin in React Native Expo with Bare Workflow Nov 26, 2013 · Weblogic Start Failed java.lang.NoClassDefFoundError: weblogic/Server Hot Network Questions What are the conditions necessary for a programming language to have no undefined behavior? If you are using Java 8 Update 151 (8u151) or later, also check this:. New Features New Security property to control crypto policy. This release introduces a new feature whereby the JCE jurisdiction policy files used by the JDK can be controlled via a new Security property.Oct 1, 2022 · If you are working on spring MVC web application and you are trying to use JSR-303 validation annotations then you might face this exception. Exception stack trace looks like this. And I get the following error: java.lang.NoClassDefFoundError: Could not initialize class org.apache.spark.eventhubs.EventHubsConf$ Cluster Configuration: Databricks Runtime Version: 7.0 (includes Apache Spark 3.0.0, Scala 2.12) Driver & Worker Type: 14.0 GB Memory, 4 Cores, 0.75 DBU Standard_DS3_v2; I have installed the following library:I have seen this: java.lang.NoClassDefFoundError: Could not initialize class XXX And this: Different methodologies for solving bugs that only occur in production But my question is, given what the ...Could not initialize class org.apache.jmeter.protocol.http.proxy.ProxyControl Hot Network Questions Looking for a series of books that starts with a girl looking in her fridge, realizing she doesn’t like what’s in there and switches itOct 29, 2021 · 5 Answers. I think you might be using the wrong version of Java. From the doc: Spark runs on Java 8/11, Scala 2.12, Python 3.6+ and R 3.5+. Python 3.6 support is deprecated as of Spark 3.2.0. Java 8 prior to version 8u201 support is deprecated as of Spark 3.2.0. For the Scala API, Spark 3.2.0 uses Scala 2.12. Jan 11, 2022 · Could not initialize class org.nd4j.linalg.factory.Nd4j in docker container. I am trying to import a KERAS file in a docker container with a program that has the following java code sample: String weights = getFile (_modelFile).getAbsolutePath (); String modelConfiguration = getFile (_configFile).getAbsolutePath (); _model = KerasModelImport ... Jul 8, 2012 · I have the following code that's trying to establish a connection to a remote database. It's throwing an exception, and I can't figure out why. import java.util.List; import java.util.Arr... Java.Lang.NoClassDefFoundError: Could Not Initialize Class エラーを根絶するためのソリューション 今日は、別の実行時エラーについて学習します: java.lang.noclassdeffounderror: could not initialize class. まず、このエラーが発生した Java プログラムを調べて、考えられる理由につい ...Could not initialize class org.nd4j.linalg.factory.Nd4j in docker container. I am trying to import a KERAS file in a docker container with a program that has the following java code sample: String weights = getFile (_modelFile).getAbsolutePath (); String modelConfiguration = getFile (_configFile).getAbsolutePath (); _model = KerasModelImport ...Jul 2, 2021 · when we migrated from Oracle JDK-8 to Open JDK-11, Apache POI excel generation has issues tried already -Djava.awt.headless=true org.springframework.web.util.NestedServletException: Handler dispatch May 15, 2017 · There is a solution to this problem (Cassandra Startup failure on ARM64 machine (java.lang.NoClassDefFoundError: Could not initialize class com.sun.jna.Native)), Soultion suggests changes in cassandra-env.sh. I tried it but it is not working for me. I checked with these options (separately) in cassandra-env.sh Sep 20, 2012 · 4 Answers. This problem is caused by not including the asm dependencies that cglib has. Solution 1: Add the correct versions of asm and asm-util to your classpath. Solution 2: Use the cglib-nodep version (which includes both asm dependencies). I can't thank you enough for your valuable answer for the problem. Nov 9, 2022 · What Is java.lang.NoClassDefFoundError? When the Java Runtime runs a Java program, it does not load all the classes and dependencies at once. Instead, it calls upon the Java Classloader to load classes in memory as-and-when-required. While loading a class, if the Classloader cannot find the class’s definition, it throws the NoClassDefFoundError. Weblogic Start Failed java.lang.NoClassDefFoundError: weblogic/Server Hot Network Questions What are the conditions necessary for a programming language to have no undefined behavior?I could resolve the issue. The problem was the minor version of pdfbox, fontbox and jempbox were not the same. Hence the PDFFont was not initialized, because internally it needs to load the classes of fontbox also and probably there was a mismatch in the version id of the classes
I have updated my dependecies like you said in your comment and i have this now : org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.. Pornhup comandved2ahukewiw9tsw6 saaxvakraihc6lazcqfnoeca4qaqandusgaovvaw16g7ixlbwfrtlt24j6i33q
Jul 7, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.Provide details and share your research! But avoid …. Asking for help, clarification, or responding to other answers. 5 Answers. I think you might be using the wrong version of Java. From the doc: Spark runs on Java 8/11, Scala 2.12, Python 3.6+ and R 3.5+. Python 3.6 support is deprecated as of Spark 3.2.0. Java 8 prior to version 8u201 support is deprecated as of Spark 3.2.0. For the Scala API, Spark 3.2.0 uses Scala 2.12.Jul 2, 2021 · when we migrated from Oracle JDK-8 to Open JDK-11, Apache POI excel generation has issues tried already -Djava.awt.headless=true org.springframework.web.util.NestedServletException: Handler dispatch This is another common reason for java.lang.NoClassDefFoundError, when your class performs some static initialization in a static block like many Singleton classes initialized itself on the static block to take advantage of thread-safety provided by JVM during the class initialization process, and if static block throws an Exception, the class ... You're probably missing some dependant library. In Eclipse you can look inside the jar file from project explorer and verify that there is a package 'org.apache.axis.client' and it contains class AxisClient. (If you're not in Eclipse then otherwise you can just unpack your jar and see that the class is there - many possibilities for that, you ... java.lang.IllegalAccessError: class org.apache.spark.storage.StorageUtils$ (in unnamed module @0x12a94400) cannot access class sun.nio.ch.DirectBuffer (in module java.base) because module java.base does not export sun.nio.ch to unnamed moduleOct 29, 2021 · 5 Answers. I think you might be using the wrong version of Java. From the doc: Spark runs on Java 8/11, Scala 2.12, Python 3.6+ and R 3.5+. Python 3.6 support is deprecated as of Spark 3.2.0. Java 8 prior to version 8u201 support is deprecated as of Spark 3.2.0. For the Scala API, Spark 3.2.0 uses Scala 2.12. Aug 10, 2015 · Spark Error: Could not initialize class org.apache.spark.rdd.RDDOperationScope. I've created a spark standalone cluster on my laptop, then I go into an sbt console on a spark project and try to embed a spark instance as so: val conf = new SparkConf ().setAppName ("foo").setMaster (/* Spark Master URL*/) val sc = new SparkContext (conf) sc ... Jan 26, 2016 · Could not initialize class io.jsonwebtoken.SignatureAlgorithm , java.lang.NoClassDefFoundError, 0 HTTP Status 500 - Handler processing failed; nested exception is java.lang.UnsatisfiedLinkError: The specified module could not be found Weblogic Start Failed java.lang.NoClassDefFoundError: weblogic/Server Hot Network Questions What are the conditions necessary for a programming language to have no undefined behavior?Oct 4, 2018 · If this specific jar doesn't suit you, there are a few others where chis class could be found. If you use Eclipse, there is a handy tool that allows you to see what jars contain the class you need, and this way you can see what makes most sense given what you are doing. Under Mac, you can press CMD+Shift+T and enter the class name. Hope this helps. So, the java.lang.noclassdeffounderror: could not initialize class error by our server means it cannot locate the class file. It can be caused by different reasons that are listed below. The issue can be in the static block (also called a static initializer)..