Two new Java software technologies could help cut the size of Java applications for embedded and mobile devices, allowing more business features to be deployed.
Hewlett-Packard last week announced an add-on to its Chai Java virtual machine (ChaiVM) for information appliances that can shrink the memory footprint of Java applications by up to 90%.
The product is called ChaiFreezeDry.
4thpass, which produces software that protects Java code from being copied, last week unveiled a version of its SourceGuard software for embedded applications that performs the same function.
The company said applications would be reduced by up to 75%, allowing more features to be incorporated into applications for mobile phones, set-top boxes and personal digital assistants.
HP's ChaiVM is an alternative to Sun's EmbeddedJava and PersonalJava, which HP said can scale from low-end to high-end applications and includes support for applets.
The software strips Java applications of unnecessary features to reduce its size. It will be incorporated into the ChaiVM in a future release.
ChaiFreezeDry strips the application of any unnecessary calls to class libraries and removes functions from the libraries that are not used by the application.
SourceGuard uses the same method, and also renames field names, files and programming calls to reduce the size further and makes reverse-engineering of the code virtually impossible.
Gary Barnet, senior consultant at analyst firm Ovum, told PC Week: "Overall, this is a very good thing indeed. One of the biggest issues with embedded devices is the size of applications.
"Anyone delivering Java apps for embedded devices would be interested, and it could make Chai more popular for certain applications," he added.
The software also has implications for Java's future success, he said, because it fills the gaps in Java technology to make the language more viable for enterprise applications.
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