() 해외배송 가능
Excelsior JET enables you to accelerate your Java applications, to secure them against reverse engineering, to create a complete application setup, and to distribute your Java software products without deployment dependencies such as the Java Runtime Environment (JRE). Yet, you can substantially reduce download size and disk footprint of your Java applications.
Your Java application is delivered in a portable bytecode form and runs on top of the Java Virtual Machine (JVM). The JVM is a part of the JRE that should be installed on every system on which your application runs.
The JVM executes the application and gradually improves its performance by optimizing the Java code at run time.
Fig 1. JVM warm-up cycle vs. steady performance of a native app
Put simply, when a user launches your application or a consumer turns on your Java-powered device, Java code performance is relatively low. The performance is improved to some extent only after the application has run for a while. Unfortunately, when it is re-started, the entire warm-up cycle gets repeated.
- Is there a direct route to Java performance? Yes. |
Suppose you had an automatic tool that optimizes Java code for your target platform before execution. Free of resource constraints inherent to run time optimizers, it processes all the code and optimizes it well.
You feed the application's classes to the tool, which optimizes them for performance and saves the results to disk. Now, you can deploy your Java application in optimized form so that it runs fast from the start on target systems.
What is that automatic tool we are talking about? Read on.
A Java application typically consists of class files and resource files, like images, which are packed into one or more jar files.
Using the Excelsior JET Optimizer, you convert the classes into highly optimized x86 code and create a native executable for Windows or Linux. This technique is called Ahead-Of-Time (AOT) compilation.
Fig 2. AOT compilation
Now, the original Java classes are no longer required for the application to run.
The best way to secure your Java classes against reverse engineering is to not distribute them at all. Ahead-Of-Time compilation makes it possible. |
And you can launch the executable as you would a native application.
Upon startup, the application executable links to the Excelsior JET Runtime, which provides the Java SE API classes (also native compiled) and low-level runtime support routines necessary for Java applications, such as garbage collection.
Fig 3. The Runtime serves the compiled executable
Now, your Java application runs directly on the underlying hardware.
When the Java code is agressively optimized for the target hardware before execution, applications run at full speed right from the start. |
Finally, you can leverage Excelsior JET to create a professional installation for the optimized application.
With the help of the Excelsior JET Installation Toolkit, you can create a complete installation package that includes your optimized Java application, the Excelsior JET Runtime, and any additional files, like user's documentation, extra utilities, and so on.
Fig 4. Packaging the optimized application
The basic deployment procedure is very simple. The created installation package is a self-contained directory that can be installed on target systems by a simple copy operation. Another option is store it on removable media, such as a flash memory card or USB drive, enabling your end users to run the application without installation.
If necessary, you can wrap the package into Excelsior Installer bundled with Excelsior JET or use another setup generator of your choice.
The JRE need not be installed on target systems for your application to run.
Do not forget to remove the JRE from your application's system requirements |
Now you can ship your server-side and desktop Java applications or Java-powered devices to end users.
Fig 5. Java deployment simplified
Your Java application may need to load classes that are available only on a target system, downloaded from a remote host, or generated at run time. Examples are dynamic proxies, third-party plug-ins for your application, and JDBC drivers.
How does Excelsior JET cope with that? Easily.
The Excelsior JET Runtime includes a JIT compiler that transparently loads Java classes to the running application.
Fig 6. Dynamic class loading
교환 및 반품이 가능한 경우
- 상품을 공급 받으신 날로부터 7일이내 단, 가전제품의
경우 포장을 개봉하였거나 포장이 훼손되어 상품가치가 상실된 경우에는 교환/반품이 불가능합니다.
- 공급받으신 상품 및 용역의 내용이 표시.광고 내용과
다르거나 다르게 이행된 경우에는 공급받은 날로부터 3월이내, 그사실을 알게 된 날로부터 30일이내
교환 및 반품이 불가능한 경우
- ESD(Electronic Software Distribution), 이메일로 설치key, 설치파일 또는 사용증서로 납품되는 제품의 경우는 제품 자체에 심각한 문제가 있는 경우를 제외하고는
반품이 불가 합니다.
- 고객님의 책임 있는 사유로 상품등이 멸실 또는 훼손된 경우. 단, 상품의 내용을 확인하기 위하여
포장 등을 훼손한 경우는 제외
- 포장을 개봉하였거나 포장이 훼손되어 상품가치가 상실된 경우
(예 : 가전제품, 식품, 음반 등, 단 액정화면이 부착된 노트북, LCD모니터, 디지털 카메라 등의 불량화소에
따른 반품/교환은 제조사 기준에 따릅니다.)
- 고객님의 사용 또는 일부 소비에 의하여 상품의 가치가 현저히 감소한 경우 단, 화장품등의 경우 시용제품을
제공한 경우에 한 합니다.
- 시간의 경과에 의하여 재판매가 곤란할 정도로 상품등의 가치가 현저히 감소한 경우
- 복제가 가능한 상품등의 포장을 훼손한 경우
(자세한 내용은 고객만족센터 Q&A게시판 또는 E-MAIL상담을 이용해 주시기 바랍니다.)
※ 고객님의 마음이 바뀌어 교환, 반품을 하실 경우 상품반송 비용은 고객님께서 부담하셔야 합니다.
(색상 교환, 사이즈 교환 등 포함)