Core Java - Interview Questions and Answers for 'Java9' | Search Interview Question

Core Java - Interview Questions and Answers for 'Java9' - 5 question(s) found - Order By Newest

Q1. What are the new classes in JDK 1.9 ( Java 9 ) ?

Ans. http://www.buggybread.com/2015/05/java-9-new-classes-and-interfaces-in.html

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java9 java 9 jdk1.9 jdk 1.9}

Q2. What are the changes in Java 9 ?

Core Java

Ans. JVM and JDK are getting smaller.

New command line tool called jshell that will add native support and popularize a Java way to REPL (Read-Eval-Print-Loop)

private methods in interfaces

Introduction of the module system or project Jigsaw

JavaDoc Search

Light version of JSON API

HTTP2 client

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Java 9 Java9 changes in Java 9 Asked in 1 Companies}

Q3. What is project Jigsaw in Java 9 ?

Core Java

Ans. The projects aims to organize the Java source code into independent modules and hence facilitate building them independently.So now we will have multiple core java jars instead of single one. This way of organizing the code would offer following advantages

1. Will make applications lighter as only required modules will be built with the application. Moreover there are some legacy packages currently which anyone hardly use.

2. Reuse same class whole identifiers across different modules.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java 9 java9 project jigsaw}

Q4. What does the modularity in project jigsaw means ?

Core Java

Ans. It means that now individual modules will be built independently instead of complete jdk built in a single jar file. So we will have multiple jars instead of single jar. Moreover this organization would result in lighter applications as they can just built themselves with the required jars and hence ignoring the not required and legacy modules.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java 9 java9 project jigsaw}

Q5. Does Java SE has Immutable collections ?

Core Java

Ans. Yes wef from Java 9

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java 9 java9 immutable immutability collections}

Search Interview Questions

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.