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  Java Jdk 14 Download is the most popular language and platform. Java. Oracle Inc has promised to release java version every year and updates every six months.

As you know we have updated on all the java versions like java 9java 10java 11, java 12, and Java 13. You can read more about JDK 14 release notes. Java Jdk 14 Download

Features of Java Jdk 14

Java Jdk 14 Features, Now we will discuss each of the features in detail: Java Jdk 14 Download

1. Pattern Matching for instanceof

We already know the use of instanceof operator which is used to check whether the given object matches the reference type or not. Pattern matching for instanceof operator allows for its efficient use and decreases the necessity of type conversions in Java applications. Java Jdk 14 Download

2. Helpful NullPointerExceptions

With Java Jdk 14 release, there are some improvements in NullPointer Exceptions in Java Jdk 14. The necessary information will be shown to the user by the JVM. For example, if there occurs an error that generates a null value, so the JVM should display the variable that results in zero value. This helps in easy catching and recovering the error.

3. Switch Expressions

Java 14 comes with an extended version of the switch statement. If there are multiple causes that result in the same output then we write each case with a comma-separated value followed by a -> arrow to return a value. Java Jdk 14 Download

Example:

switch(month) {
    case January, February, -> System.out.println("Winter Season");
    case March, April, May, June -> System.out.println("Summer Season");
    case June, July, August -> System.out.println("Monsoon Season");
}

4. Packaging Tools

The Packaging tool feature of Java Jdk 14 provides how to ease the method of application installation. The jpackage tool is used to bundle a Java application into a platform-specific package. Java 14 supports the following platform-specific formats:

For Linux: deb and rpm

For macOS: pkg and dmg

For Windows: msi and exe

5. Records

Java 14 release came up with the records as a preview feature. We can now compact the class declaration syntax with records. Users face a drag to write down the repetitive codes; to get rid of this problem Java 14 has introduced the feature of records. For example:

Without records:

class Rectangle
{
    public final int length;
    public final int breadth;
    public Rectangle(int length, int breadth)
    {
      this.length = length;
      this.breadth=breadth;
    }
}

With Records:

record Rectangle(int length, int breadth)

6. NUMA-Aware Memory Allocation for G1

Numa (Non-Uniform Memory Access) is an architecture of sharing memory locally which eventually increases the performance of the system. But in NUMA memory architecture there is a small amount of memory stored in a processor. Java 14 proves to be a boon to us that provides an advanced feature to improve the performance of G1 Garbage collector on the large machines. Java Jdk 14 Download

7. Non-Volatile Mapped Byte Buffers

We know that a Non-volatile memory is a memory area where there would not be any loss of data even after the power goes off. We also call such memory as persistent memory.

With the discharge of Java 14, there’s an enhancement within the MappedByteBuffer class that comes with an increased ability to realize access to nonvolatile storage within the memory.

8. JFR Event Streaming

Java 14 now provides an API through which the data in the JFR ( Java Flight Recorder ) can continuously monitor the in-process and out-process applications. JFR is now available freely and has become part of OpenJDK. is now part of the OpenJDK and therefore freely available.

The module jdk.jfr present within the package jdk.jfr.consumer enhances the power to asynchronously subscribe to the events.

9. ZGC on macOS

ZGC (Z Garbage Collector) gets introduced with the Java 14 release that becomes an option for macOS users. Java 14 also provides the facility in which the Garbage collector releases the unused memory from the system.

10. ZGC on Windows

This feature is the same feature as the ZGC (Z Garbage Collector) for macOS, the only difference being that it provides the ZGC for Windows users. The goal is to use the feature of ZGC being platform-independent so that it can be used on any platform. But, there are some restrictions to use it with the older versions of Windows.

11. Deprecate the Solaris and SPARC Ports

According to this update, the Oracle Community wishes to get rid of the ports of outdated Operating systems like Solaris, Sparc, etc. Java 14 has marked them deprecated in order that they will be completely removed within the further updates of Java. Deprecating these ports, there will be a clear way to develop the new features to move the platform in the forward direction.

12. Remove the Concurrent Mark Sweep (CMS) Garbage Collector

As proposed by Thomas Schatzl, Java 14 aims to get rid of the CMS (Concurrent Mark Sweep) garbage man from Java. This garbage collector was already marked as deprecated with Java 9. And, in Java 14, it’s been completely removed. However, the update does not aim to remove the CMS Garbage collector from the Java versions that completely rely on it.

13. Remove the Pack200 Tools and API

Java 14 officially proposes the Pack200 Tools and API present within the java.util.jar package to be faraway from Java. The Pack200 is a tool to compress the JAR (Java Archives) files. This API was already marked as obsolete from Java 11.

14. Text Blocks (Second Preview)

Java 14 introduces the second preview for the text blocks. The first preview came from Java 13. Text blocks are introduced so as to allow the programmers to easily create multi-line strings.

HTML Example Without Text Block

String html = "<html>\n" +
              "    <body>\n" +
              "        <p>Hello, world</p>\n" +
              "    </body>\n" +
              "</html>\n";

HTML Example With Text Block

String html = """
              <html>
                  <body>
                      <p>Hello, world</p>
                  </body>
              </html>
              """;

New Line Example:

In mid-2019, JDK 13 introduced Text Block as a Preview feature, which then re-visited by adding below two new escape sequences in Java Jdk 14.

With the second preview of text blocks, there is an introduction to 2 new escape sequences which are: \ and \s. These escape sequences allow fine-grained control over the processing of whitespaces and newlines.

// Without Text Block
String literal = "two escape sequences first is for newlines " +
"and, second is to indicate white space " +
"or a single space.";
// With the \ escape sequence this could be expressed as:
String text = """
                two escape sequences first are for newlines \
                and, second is to indicate white space \
                or single space.\
                """;

15. Deprecate the ParallelScavenge + SerialOld GC Combination

With Java 14 there’s a proposal to deprecate the mixture of two garbage collectors:ParallelScavenge GC and SerialOld GC. This proposal is because there are very few Java users who use this combination of Garbage Collectors. Moreover, this combination requires considerable effort and cost to keep it updated and it’s of no use if they are not used by the majority of users. Therefore they have been marked as deprecated since Java14.

16.Foreign-Memory Access API (Incubator)

There are many libraries and applications like Nettys ByteBuf API, matched, mapDB, Ignite, etc that access foreign memory. There is no such API in Java to provide access to foreign memory. Therefore, with Java Jdk 14 there is a proposal to implement a suitable Java API that can help Java applications to easily access foreign memory.

Java Jdk 14 Download

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Conclusion

In this article, we went through the release of Java Jdk 14, a number of updates and enhancements to ease the effort and performance of the Java applications and also deprecates many outdated features and plans to eliminate them with further releases.

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