WebLogic

Question 1

WebLogic Server

Answer 1

• an application server that deploys, runs, and distributes Java-based applications
• it can access other services like databases, messaging, external enterprise systems (like e-business suite, PeopleSoft, salesforce)
• 12c supports multi-tenancy (MT)

Question 2

Weblogic Domain

Answer 2

• a logical collection of resources or servers
• a logically related group of WebLogic Server instances (admin and managed servers) that you manage from a single set of configuration artifacts.

Question 3

Where is domain configuration stored?

Answer 3

$DOMAIN_HOME/config/config.xml

Question 4

Domain: Building Blocks

Answer 4

• domain organization & home
• servers
• clusters
• machines
• domain directory
• admin console

Question 5

JDBC

Answer 5

Java DataBase Connectivity

- Java API to connect and execute the query with the database

Question 6

Path Variable

Answer 6

• an environment variable that decides how programs and commands are executed on Windows
• setting the path variable for a program or command allows you to run it from anywhere on the system (globally) without having to specify its absolute path

Question 7

What is Maven

Answer 7

• a project building management tool that depends on the POM (Project Object Model)
• it manages builds, dependencies + versions, and documentation
• the core configuration file is pom.xml

Question 8

Why Maven

Answer 8

• central repositories for dependencies
• universal build system
• easy build process
• make new features easy

Question 9

What is the software build?

Answer 9

• an activity to translate the human-readable source code into an efficient executable program
• the process of creating the application binaries for a software release, by taking all the relevant source code files and compiling them and then creating a build artifact (such as binaries and executable program, etc.)

Question 10

What is the procedure to build?

Answer 10

• fetch the code from the source control repository
• compile the code and check the dependencies
• run the automated unit tests
• link the library, files, code, etc accordingly
• when everything is passed, it’s built an artifact and store
• achieve the build logs
• send the notification emails to the concerned person

Question 11

settings.xml file in Maven

Answer 11

• it allows us to specify which local and remote repositories it will use
• also use it to store the settings that we don’t want in our source code, such as credentials

Question 12

Repository vs Dependency (Maven)

Answer 12

• the repository is a collection (storage) of artifacts (e.g. jars)
• dependency is a situation where your project is dependent on another artifact to perform its task (e.g. compile, run, unit test)

Question 13

Maven artifact

Answer 13

• it is usually a jar file that gets deployed to a Maven repository
• each one has a group ID, artifact ID, and a version string

Question 14

Java Class file

Answer 14

• a file containing Java bytecode and having .class extension that can be executed by JVM
• it is created by a Java compiler from .java files as a result of a successful compilation
• if a .java file has more than one class then each class will compile into a separate class file

Question 15

Java Jar file

Answer 15

a package file format typically used to aggregate many Java class files and associated metadata and resources (text, images, etc.) into one file to distribute application software or libraries on the Java platform