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