Difference between Java 12 and Java 13

Java 12 Interview Online Test	Java 13 Interview Online Test
Features Added: - String Class New Methods: indent method adjusts the indentation of each line, transform method to revert the string. - File::mismatch Method: New mismatch method in the nio.file.Files utility class. The method is used to compare two files and find the position of the first mismatched byte in their contents. - Teeing Collector: A new teeing collector as an addition to the Collectors class. It is a composite of two downstream collectors. Every element is processed by both downstream collectors. Then their results are passed to the merge function and transformed into the final result. - Compact Number Formatting: It's designed to represent a number in a shorter form, based on the patterns provided by a given locale. - Switch Expressions (Preview): The syntax of switch statement got introduced. New switch statements are not only more compact and readable. They also remove the need for break statements. The code execution will not fall through after the first match. - Pattern Matching for instanceof (Preview): Earlier if statements together with instanceof, we would have to explicitly typecast the object to access its features, but now we need not to typecast separately after instanceof. - Shenandoah: A Low-Pause-Time Garbage Collector: It is now experimental garbage collector and not the default GC. It reduces the GC pause times by doing evacuation work simultaneously with the running Java threads. - Microbenchmark Suite: Around 100 microbenchmark tests added in JDK which will perform continuous performance testing on a JVM. - Default CDS Archives: The Class Data Sharing (CDS) feature helps reduce the startup time and memory footprint between multiple Java Virtual Machines.	Features Added: - Switch Expressions: New yield statement got added. Using yield, we can now effectively return values from a switch expression. It's now easy to implement the strategy pattern using the new switch. - Text Blocks: It is for multi-line Strings such as embedded JSON, XML, HTML, etc. Now there is no need to escape double quotes or to add a carriage return. - Dynamic CDS Archives: Class data sharing (CDS) has been a prominent feature of Java HotSpot VM for a while now. It allows class metadata to be shared across different JVMs to reduce startup time and memory footprint. - ZGC: It now returns uncommitted memory to the operating system by default, up until the specified minimum heap size is reached.

Java 12

Java 13

Features Added:
- String Class New Methods: indent method adjusts the indentation of each line, transform method to revert the string.

- File::mismatch Method: New mismatch method in the nio.file.Files utility class. The method is used to compare two files and find the position of the first mismatched byte in their contents.

- Teeing Collector: A new teeing collector as an addition to the Collectors class. It is a composite of two downstream collectors. Every element is processed by both downstream collectors. Then their results are passed to the merge function and transformed into the final result.

- Compact Number Formatting: It's designed to represent a number in a shorter form, based on the patterns provided by a given locale.

- Switch Expressions (Preview): The syntax of switch statement got introduced. New switch statements are not only more compact and readable. They also remove the need for break statements. The code execution will not fall through after the first match.

- Pattern Matching for instanceof (Preview): Earlier if statements together with instanceof, we would have to explicitly typecast the object to access its features, but now we need not to typecast separately after instanceof.

- Shenandoah: A Low-Pause-Time Garbage Collector: It is now experimental garbage collector and not the default GC. It reduces the GC pause times by doing evacuation work simultaneously with the running Java threads.

- Microbenchmark Suite: Around 100 microbenchmark tests added in JDK which will perform continuous performance testing on a JVM.

- Default CDS Archives: The Class Data Sharing (CDS) feature helps reduce the startup time and memory footprint between multiple Java Virtual Machines.

Features Added:
- Switch Expressions: New yield statement got added. Using yield, we can now effectively return values from a switch expression. It's now easy to implement the strategy pattern using the new switch.

- Text Blocks: It is for multi-line Strings such as embedded JSON, XML, HTML, etc. Now there is no need to escape double quotes or to add a carriage return.

- Dynamic CDS Archives: Class data sharing (CDS) has been a prominent feature of Java HotSpot VM for a while now. It allows class metadata to be shared across different JVMs to reduce startup time and memory footprint.

- ZGC: It now returns uncommitted memory to the operating system by default, up until the specified minimum heap size is reached.

Related differences

Java 11 vs Java 12	Java 12 vs Java 13	Java 13 vs Java 14

Is it helpful? Yes No

Get differences from below

JSF vs JSP	JSP vs Servlets	JSP vs ASP
JSF 1.2 vs JSF 2.0	JSF 2.0 vs JSF 2.1	Java 5 vs Java 6
Java 6 vs Java 6 update 10	Java 6 vs Java 7	Java 6 update 10 vs Java 6 update 12
Java 1.0 vs Java 1.1	Java 1.1 vs Java 1.2	Java 1.2 vs Java 1.3
Java 1.3 vs Java 1.4	Java 1.4 vs Java 5	Struts 1 vs Struts 2
Struts 1.1 vs Struts 1.2	Struts 1.2 vs Struts 1.3	Linux vs Unix
C vs C++	Java vs C++	Java vs J2EE
Java vs Kotlin	Java vs .NET	Struts vs JSF
Struts vs Spring	Spring vs Spring Boot	Apache vs IIS
Jboss vs Tomcat	Jboss vs WebLogic	WebLogic vs Websphere
JavaScript vs Jquery	JavaScript vs VBScript	JavaScript vs TypeScript
Jquery vs AngularJS	HTML vs XML	HTML vs XHTML
HTML vs DHTML	HTML 5 vs HTML 4	Java 7 vs Java 8
EJB 2.0 vs EJB 3.0	EJB 3.0 vs Spring	JDBC vs Hibernate
JDBC vs JPA	JDBC 3.0 vs JDBC 4.0	CSS 2 vs CSS 3
EJB 1.0 vs EJB 2.0	AWT vs Swing	Swing vs Applet
PHP vs JSP	J2EE vs J2ME	Java 8 vs Java 9
JPA vs Hibernate	MVC 1 vs MVC 2	Hibernate 3 vs Hibernate 4
Spring 3.0 vs Spring 4.0	Java 9 vs Java 10	jQuery Mobile vs Bootstrap
JavaBeans vs EJB	JSON vs XML	RESTful Web Services vs SOAP Web Services
Spring 2.5 vs Spring 3.0	HTTP vs HTTPS	AngularJS vs NodeJS
AngularJS vs Angular	NodeJS vs Java	NodeJS vs Spring Boot
NodeJS vs Golang	PaaS vs IaaS	SaaS vs PaaS
SaaS vs IaaS	On-Premise vs Cloud Computing	Monolithic vs Microservices
Java 10 vs Java 11	Spring MVC vs Spring Boot	Golang vs Java
Python vs Java	AWS vs Azure	AWS vs Google Cloud/GCP
Ansible vs Terraform	Ansible vs Puppet	Puppet vs Terraform
OpenID Connect vs OAuth 2.0	SAML vs OpenID Connect	Java 11 vs Java 12
Java 12 vs Java 13	Java 13 vs Java 14	Java 14 vs Java 15
Java 15 vs Java 16	Java 16 vs Java 17	Python 2 vs Python 3
RDBMS vs Hadoop	Angular vs React	Java 17 vs Java 18
GraphQL vs RESTful Web Services (REST API)	RESTful Web Services (REST API) vs gRPC	Android vs iOS
TikTok vs Instagram	Instagram vs YouTube	TensorFlow vs PyTorch
OracleJDK vs OpenJDK