jdk7u8 contains demo and sample code.

rpm -qlp jdk-7u8-fcs-bin-b10-linux-i586-07_sep_2012.rpm | egrep "demo$"

/usr/java/jdk1.7.0_08/demo
/usr/java/jdk1.7.0_08/demo/db/programs/nserverdemo


rpm -qlp jdk-7u8-fcs-bin-b10-linux-i586-07_sep_2012.rpm | egrep "sample$"
/usr/java/jdk1.7.0_08/sample
/usr/java/jdk1.7.0_08/sample/jnlp/jreinstaller/src/share/classes/jnlp/sample
/usr/java/jdk1.7.0_08/sample/jnlp/servlet/src/classes/jnlp/sample
/usr/java/jdk1.7.0_08/sample/scripting/scriptpad/src/com/sun/sample