JRE and project layout option

When i was creating java project in eclipse i have various JRE and 'project layout' and 'configure JREs', and 'configure default' etc options. Please advise what each means when to use which one. which one one will map to JAVA_HOME.

How to change eclipse ini file to start always with JAVA_HOME jdk?

Please advise
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if you want to change the ini file then do:
-vm C:\pathtoJDK\bin\javaw.exe

or replace the path with %JAVA_HOME%
gudii9Author Commented:
if you want to change the ini file then do:
-vm C:\pathtoJDK\bin\javaw.exe

i have to open eclipse.ini file and replace something else with

-vm C:\pathtoJDK\bin\javaw.exe

what it meant by default jre or jdk option as far as eclipse is concerned.

What does it has by default.

please advise.
I would expect it to default to what you have defined in JAVA_HOME.
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gudii9Author Commented:
if you want to change the ini file then do:
-vm C:\pathtoJDK\bin\javaw.exe

from where i have to do it. From command prompt of my windows laptop. Which folder location i have to go to execute this command. Where i see in that .ini file existing jdk?

where is the location of the ini file in eclipse folder?
please advise
edit your ini file in the eclipse installation directory

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gudii9Author Commented:
i will try to find this file.
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