Java Could not reserve enough space for object heap error

Question

I have Java7 running on 32-bit Windows and 4 GB RAM, but:

java -Xmx4G -Xms4G -jar Minecraft.jar 
java -Xmx3G -Xms3G -jar Minecraft.jar 
java -Xmx2G -Xms2G -j         


        

Answer 1

This was occuring for me and it is such an easy fix.

1. you have to make sure that you have the correct java for your system such as 32bit or 64bit.

2. if you have installed the correct software and it still occurs than goto

   control panel → system → advanced system settings for Windows 8 or

   control panel → system and security → system → advanced system settings for Windows 10.

3. you must goto the {advanced tab} and then click on {Environment Variables}.
4. you will click on {New} under the
5. you will create a new variable. Variable name: _JAVA_OPTIONS Variable Value: -Xmx512M

At least that is what worked for me.