Java Terms that are Plagued with Vaguery

Posted by Adam Tannon on Programmers See other posts from Programmers or by Adam Tannon
Published on 2012-07-07T12:09:19Z Indexed on 2012/07/07 15:22 UTC
Read the original article Hit count: 250

Filed under:

java

|

jvm

What's the difference between a Java Process (what your OS sees) and a JVM? Are they one in the same or are they actually different?

How are the JRE and JDK different (in purpose and file content), and which one contains the libraries for Java SE?

What's the difference between the Java "Runtime" and a JVM?

These are questions I've been asking myself (and colleagues) for years and everybody seems to have very different answers.

© Programmers or respective owner

Related posts about java

Tomcat 6: Access Control Exception?

as seen on Server Fault - Search for 'Server Fault'
I'm trying to setup a tomcat6 server, and I'm trying to match another setup someone else established. However, my deployment (default Ubuntu install) uses a policy.d/ directory structure, and the established server just uses a catalina.policy file. I've tried setting every entry in policy.d to match… >>> More
Problem in creation MDB Queue connection at Jboss StartUp

as seen on Stack Overflow - Search for 'Stack Overflow'
I am not able to create a Queue connection in JBOSS4.2.3GA Version & Java1.5, as I am using MDB as per the below details. I am putting this MDB in a jar file(named utsJar.jar) and copied it in deploy folder of JBOSS, In the test env. this MDB works well but in another env. [ env settings and… >>> More
failing to establish connection between Postgres db and gwt

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am using Postgres and gwt 2.0 for one of my applications. I am facing problem connecting to the database. When I try to connect it gives "ClassNotFoundException". Here is what I get when I try to connect to database: java.lang.ClassNotFoundException: org.postgresql.Driver at java.net… >>> More
failing to establish connection between postgre db and gwt

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, For i am using postgre and gwt 2.0 for one of my applications. I am facing problem connecting to the database. When i try to connect it gives "ClassNotFoundException". Here is what i get when i try to connect to database: java.lang.ClassNotFoundException: org.postgresql.Driver at java.net… >>> More
Migration and deployement problems JBoss 4.2.2.GA to JBoss 6.0.0.M2

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm trying to migrate an application running on JBoss 4.2.2.GA to JBoss 6.0.0.M2 I give you some log to explain my problem : boot.log : 2010-03-16 09:59:29,406 ERROR [org.jboss.system.server.profileservice.ProfileServiceBootstrap] (Thread-2) Failed to load profile: Summary of incomplete deployments… >>> More

Related posts about jvm

Is there a way to update all Java related alternatives?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Is there a way to quickly switch over all the Java related alternatives using update-alternatives? For instance, if want to switch Java over to 7, I run sudo update-alternatives --config java and select the Java 7 OpenJdk. But if I run update-alternatives --get-selections | grep java I get the following… >>> More
?Pick-Up??????????? JVM ?JRockit????????·??????|WebLogic Channel|??????

as seen on Oracle Blogs - Search for 'Oracle Blogs'
??Oracle JRockit JVM?????????????????????·?????????????????????????JVM??????? ???????????????????????????????????????????????????????????????????????? ??????? ?????????Oracle JRockit???????·??????????????????????????????????????????????????????????? Oracle JRockit JDK???????????????????… >>> More
how can a servlet in one jvm communicate with servlet in another jvm

as seen on Stack Overflow - Search for 'Stack Overflow'
can this be solved simply by specifying the complete url of the servlet in the RequestDispatcher? >>> More
?????????????JVM??????|WebLogic Channel|??????

as seen on Oracle Blogs - Search for 'Oracle Blogs'
JRockit JVM???????????????????????????????????????????????????????????????????????????????????????????? ?JVM???????????????? ?JVM??????????? ???????????????????? ????????? ?JVM??????????????JVM??????????????… >>> More
Apache DS fails to list users

as seen on Stack Overflow - Search for 'Stack Overflow'
Apache ds fails to list the users INFO | jvm 1 | 2012/03/28 15:54:04 | java.lang.Error: ERR_546 CRITICAL: page header magic for block 59 not OK 0 INFO | jvm 1 | 2012/03/28 15:54:04 | at jdbm.recman.PageHeader.(PageHeader.java:95) INFO | jvm 1 | 2012/03/28 15:54:04 | at… >>> More