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Java Options question
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Mac Elite
Join Date: Oct 2002
Location: 33-37-22.350N / 111-54-37.920W
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In the Applications/Utilities/Java there is a Java 1.4.2 plugin settings app, I wonder has anyone tinkered with that to speed up java apps on their mac?
What does the JAR compression do anyway?
Thanks
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Mac Pro 3.0, ATI 5770 1GB VRAM, 10GB, 2xVelociraptor boot RAID, 4.5TB RAID0 storage, 30" & 20" Apple displays.
2 x Macbook Pro's 17" 3.06 4 GB RAM, 256GB Solid State drives
iMac 17" Core Duo 1GB RAM, & 2 iPhones 8GB, and a Nano in a pear tree!
Apple user since 1981
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Dedicated MacNNer
Join Date: Oct 2000
Location: Pasadena, CA, USA
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I can't answer your first question, but I know the answer to the second can be found on Sun's web site at http://java.sun.com/docs/books/tutorial/jar/. According to that page, Jar files:
- Can be digitally signed
- Allow a developer to bundle all the files associated with a Java application or applet into one file, which is very convenient
- Can be compressed
- Are used by the Java extensions framework
- Can enforce "package sealing" (a somewhat obscure technical feature that has something to do with versioning)
- Can contain version information
- Are a standard part of the Java API
Which means that, conceptually JAR files are similar in function to Bundles on OS X.
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Mac Elite
Join Date: Oct 2002
Location: 33-37-22.350N / 111-54-37.920W
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Originally posted by eyadams:
I can't answer your first question, but I know the answer to the second can be found on Sun's web site at http://java.sun.com/docs/books/tutorial/jar/. According to that page, Jar files:
- Can be digitally signed
- Allow a developer to bundle all the files associated with a Java application or applet into one file, which is very convenient
- Can be compressed
- Are used by the Java extensions framework
- Can enforce "package sealing" (a somewhat obscure technical feature that has something to do with versioning)
- Can contain version information
- Are a standard part of the Java API
Which means that, conceptually JAR files are similar in function to Bundles on OS X.
I wonder if turning on compression will speed up java.. that would be great if so,
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Mac Pro 3.0, ATI 5770 1GB VRAM, 10GB, 2xVelociraptor boot RAID, 4.5TB RAID0 storage, 30" & 20" Apple displays.
2 x Macbook Pro's 17" 3.06 4 GB RAM, 256GB Solid State drives
iMac 17" Core Duo 1GB RAM, & 2 iPhones 8GB, and a Nano in a pear tree!
Apple user since 1981
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Clinically Insane
Join Date: Nov 1999
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Originally posted by UnixMac:
I wonder if turning on compression will speed up java.. that would be great if so,
Actually, it's more likely to slow Java down slightly, because it will have to decompress everything before it can be used. That said, the slowdown will probably be very small. The JAR (short for "Java ARchive") concept was developed as a distribution and packaging tool, not a performance booster.
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You are in Soviet Russia. It is dark. Grue is likely to be eaten by YOU!
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Mac Elite
Join Date: Oct 2002
Location: 33-37-22.350N / 111-54-37.920W
Status:
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thanks, so basically all the default settings for Java should be left alone, cool.
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Mac Pro 3.0, ATI 5770 1GB VRAM, 10GB, 2xVelociraptor boot RAID, 4.5TB RAID0 storage, 30" & 20" Apple displays.
2 x Macbook Pro's 17" 3.06 4 GB RAM, 256GB Solid State drives
iMac 17" Core Duo 1GB RAM, & 2 iPhones 8GB, and a Nano in a pear tree!
Apple user since 1981
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