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1. 

   StephenFromNYC
   Moderator

   September 2, 2010

   Hello,

   A question occurred to me while I was examining the directory structure of the Maple-IDE (0.0.6) installation on my Windows XP Professional SP3 system.

   If my understanding is correct the Maple-IDE comes with its own java directory.

   C:\Program Files\maple\java\bin

   1) In Maple-IDE 0.0.6 java version 1.6.0_16 is installed.
   2) In Maple-IDE 0.0.6 java runtime environment version 1.6.0_16-b01 is installed.
   3) In Maple-IDE 0.0.6 java hotspot client vm build 14.2-b01, mixed mode is installed.

   Does the b01 indicate the JRE a "beta"? Does the b01 indicate the java hotspot client is a "beta".

   I just made a confusing discovery. On my system I apparently have a mixture of java SDK and java JRE.

   The java Control Panel application reports version 1.6.0_20. This is consistent with the JRE directory command line information (java -version).

   1) In JRE java version 1.6.0_20 is installed.
   2) In JRE java runtime environment version 1.6.0_20-b02 is installed.
   3) In JRE java hotspot client vm build 16.3-b01, mixed mode is installed.

   However, if I change to the SDK directory the command line information (java -version) says the system has 1.6.0_17 installed.

   1) In SDK java version 1.6.0_17 is installed.
   2) In SDK java runtime environment version 1.6.0_17-b04 is installed.
   3) In SDK java hotspot client vm build 14.3-b01, mixed mode is installed.

   If the Maple is using its own installation of SDK and JRE then I assume my mixed system should not affect javac.exe. On your linux development systems do the Maple command line utilities use the java installed by Maple or the java SDK/JRE during the operating system installation?

   Any thoughts?

   Thanks!

   Stephen from NYC

   Here is a description of my system:

   Maple board: Rev 3 (summer 2010)
   Maple IDE: 0.6.0

   Processor: Pentium III (1 GHz)
   USB ports: 1.1

   OS: Windows XP Professional (32-bit)
   SP: Service Pack 3

   Java type: JDK and JRE
   Java version: 1.6.0_20 (as reported by the Control Panel)

   Posted 5 years ago #
2. 

   bnewbold
   Ex-Leaflabs

   The bundled Java runtime included in the windows release is pulled straight from Arduino/Processing; it's self contained and does not do any compiling or include a version of javac. It is only included in the windows release and is only used to run the IDE itself. On Linux and Mac the system-wide version of the JRE is used to run the IDE, and when we do release builds for any platform we use system-wide versions of the JDK (JDK = Java SDK?). On my linux system right now I use the sun-java6-jdk for building the IDE (javac 1.6.0_18) and openjdk-6-jre (java version "1.6.0_18") as a runtime.

   The size of the included Java bundle is always frustrating to me, it seems like it could be much smaller (thus reducing the total download size for windows). It would also be nice to use the OpenJDK runtime instead, I looked into switching over at one point but it seemed wiser to stick with the Sun runtime to be consistent with Arduino.

   Posted 5 years ago #

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