Get the various features of the java in 2019

2019

JAVA FETURES

IMFROMATION ▰ Java is the programming language. ▰ That is class-based and object-oriented. ▰ Java is one type of the WORA ( Write once run anywhere). ▰ Java is run on any platform with the help of the JVM (Java Virtual Machine).

▰ Java uses the spring, blade as a backend platform. ▰ Java is the very popular language and their popularity behind reason is the Platform-independent and java eliminates a lot of security issues.

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Smart Selection/Semantic

API support

Maven improvements

Extract to field

Gradle preferences

JAVA New refactor feature

FEATURES 2019

Checkstzle support

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NEW REFRACTOR ▰

Refactoring is the one type of the process which changes only the structure of the existing program without affecting its functionality and usages.

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Refactoring is also improving the code reusability, performance and remove duplicate functionality and also remove the functionality which is not used.

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SYNTAX:- Trigger rename after extract to variable/constant/method

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Here you can take the special “rename” action. And use the meaningful name.

See in this image.

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PROCESS OF REFACTORING Detect Problem

Is there problem or not?

And if the problem then check what’s the problem.

Characterize the Problem What is the change necessary? and what’s the benefit after the changes?

Check that there are the any risks?

Design Solution

Modify the code

What should “Goal state” code?

Carry out the Code transformations and leave the code functioning as same the before.

Which code transformations will move towards?

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CHANGE IN XAMPLES Rename Move Class Extract Method Extract Super class Replace Conditional with Polymorphism 6

EXTRACT TO FIELD • • • • • • •

The main reason for the use Extract variables is to make a complex expression is more understandable.

The Extract Method refactoring lets you use a code fragment.

That can be arranged, separate method and also old code with a call to the method.

There are use the several time extract method in the same place.

When you use Extract method there are you need to check for variables.

One output variable can be used as a return value for the extracted method.

Multiple output variables the extract methods refactoring may not be applied and the error message resembles.

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SMART / SEMANTIC SELECTION API SUPPORT • Semantic selection is also known as smart selection.

• We have achieved the smart select API used with the Expand Selection (Shift+Alt+Right) and Shrink Selection (Shift+Alt+Left) commands.

• Here get the more information about that.

• https://code.visualstudio.com/updates/v1_33#_smartselect-api

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CONTINUE

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MAVEN IMPROVEMENTS • • • •

Maven was released in 2004.

It has raised a few of the problem of ANT. Maven is use the XML as the format write build script.

It has the drawback is that Dependencies management does not handle conflicts well between different version of the same library.

• And other draw back is that customization of the goal is too much hard.

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GRADLE PREFERENCES • Gradle was released in 2012.

• Google adopted the Gradle as a default build tool for the Android.

• Maven use the XML where as Gradle does not use the XML. • It has own DSL based on JVM languages.

• Gradle used Apache lvy for its dependency management.

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COMPARISION GRAPH FOR THE MAVEN & GRADLE

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CHECKSTZLE SUPPORT • Check style is Java web development tool and it helps to programmers write java code.

• It has the main features is that checkstyle can check the many aspects of your source code.

• Standard checkstyle are applicable to general java coding style and require no external libraries.

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CONCLUSION • So here present the features of the Java Development in 2019.

• Day by day java is also released new features and versions also.

• It make more simple and fulfill all the requirements of the developers.

• And developers have always updated with the java.

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THANKS! 16