The Mac OS does not create/copy a .bash_profile for you when your account is created. Follow these steps to setup a normal bash profile.
1. Create .bash_profile with the following contents:
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
2. Create .bashrc with the following contents:
export PS1="[\u@\h:\w]\$ "
export JAVA_HOME=/Library/Java/Home
3. Add any aliases to .bashrc