A potentially useful and cost-saving tool for Java developers
- Can save time
- There's a risk that sloppy programmers will misuse it
A potentially useful and cost-saving tool, if you're a programmer it's worth grabbing the 30-day trial of JavaRebel.
Price$ 149.00 (AUD)
Edit-compile-test-edit-compile-test. This is the "software development cycle" all programmers know well, from "Hello World" onwards. JavaRebel is a JAR file which will allow you to skip directly from "edit" to "test" while eliminating "compile" (most of the time).
Using JavaRebel is extremely simple: just pass an appropriate command when you invoke your Java Virtual Machine. It took us about 30 seconds to get it working in Eclipse. Once it's there, it's transparent - and useful.
To test JavaRebel, we launched an application, then, while the application was running, added in some additional output code to the event handler for a button.
After a second or two, we received a notice in our console window that the relevant classes had been reloaded, and the button now executed its modified behaviour.
We can foresee this saving a tremendous amount of debugging time. Even a few minutes a day saved re-launching apps adds up, over a year, to hours or even days of productivity, depending on re-deployment time after minor edits.
There are a few changes it can't handle - you can't change class hierarchy or implement new interfaces, for example, but it's unlikely you'd be making changes like that during a standard edit-compile-test cycle.
There is also a risk factor; if the app you're working on is "live" and you are careless with your configuration, you could introduce new bugs into running code. However, that's a user error and hardly the fault of the program.
The trial version of JavaRebel lasts for 30 days and prints a message in the console window when run. This should be long enough to determine if the utility provided is worth it.
Join the PC World newsletter!
Most Popular Reviews
- 1 Sony Xperia Z4 Tablet (LTE) review: The tablet of choice for anyone on Android
- 2 Bose SoundLink Mini II Bluetooth speaker review
- 3 Apple MacBook Air 2015 review: Only better with time
- 4 HTC One (M8s) review: Better value for money than HTC's flagship
- 5 ZTE Blade S6 review: A dual-SIM, 4G smartphone for less than $300
Deals on PC World
- Networking, Wireless & VoIP
Deals on PC World
Latest News Articles
- Lenovo expands product recall for ThinkPad laptop batteries
- Microsoft plants flagship store on Sydney’s Pitt Street
- Lenovo’s WRITEit app to supply more handwriting support for Windows devices
- For Microsoft, hardware and OS consistency key in Surface 3
- HP LaserJets use a new type of toner particle that can improve energy efficiency and print speed
GGG Evaluation Team
First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.
For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.
The Fujitsu LifeBook UH574 allowed for great mobility without being obnoxiously heavy or clunky. Its twelve hours of battery life did not disappoint.
The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.
My first impression after unboxing the Q702 is that it is a nice looking unit. Styling is somewhat minimalist but very effective. The tablet part, once detached, has a nice weight, and no buttons or switches are located in awkward or intrusive positions.