No. This phone do not support Java applications.
Samsung Metro 350 has quite good battery backup. It comes with 1200 mAh removable battery and on a single charge it can last up to almost almost 4 days.
Samsung Metro 350 comes in 3 different colors - Black, White and Emerald Blue.
Yes, Metro 350 does have FM Radio.
You can store up to 1000 sms in Metro 350.