1. Describe all necessary steps and conditions for execution of a java".
2. What
is maven and explain one usse case for it?
3. What
is Exception and list two categories of java exceptions with an
exar for each?
(Short and Clear answer)
ANS.1
Maven is an automation(Build) tool used for projects in JAVA.It was developed by APACHE SOFTWARE FOUNDATION (in 2004) .It is a build tool wriiten in JAVA.Maven maily focuses on two major aspects of software building: f
1. it describes how software is built
2.It describes its dependencies.
USE CASES FOR MAEVEN CAN BE LISTED AS BELOW:-
1.It downloads dynamically Java libraries and plug-ins from one or more repositories and stores all the downloaded libraries and plug ins in a local cache.
2.An important use-case for Maven can be its ability of convention over configuration.i,e.we follow a consistent convention on structure of the files in our projects.Somebody newj oining our project will probably know the convention.
ANS 2.
Java, an exception is consisdered as an object that is responisble for wraping an error event that occurred within a method
TYPES OF EXCEPTIONS WITH EXAMPLES
1) Checked Exception
The classes which are directly inheritable from Throwable class except RuntimeException and Error are known as checked exceptions e.g. IOException, SQLException etc. Checked exceptions are checked at compile-time.
2) Unchecked Exception
The classes which inherit from RuntimeException are known as unchecked exceptions e.g. ArithmeticException, NullPointerException, ArrayIndexOutOfBoundsException etc. Unchecked exceptions are not checked at compile-time, but they are checked at runtime.
3) Error
Error is irrecoverable e.g. OutOfMemoryError, VirtualMachineError, AssertionError etc.
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