Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
java-1.8.0-openjdk-demo
java-1.8.0-openjdk-demo(x86-32)
libcompiledMethodLoad.so
libgctest.so
libheapTracker.so
libheapViewer.so
libminst.so
libmtrace.so
libversionCheck.so
libwaiters.so

Requires :

libstdc++.so.6(GLIBCXX_3.4)
libpthread.so.0
libc.so.6(GLIBC_2.0)
libdl.so.2(GLIBC_2.1)
libdl.so.2(GLIBC_2.0)
libdl.so.2
/bin/sh
libpthread.so.0(GLIBC_2.0)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libc.so.6(GLIBC_2.3)
java-1.8.0-openjdk(x86-32) = 1:1.8.0.191.b12-0.el7_5
libm.so.6
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(CompressedFileNames) <= 3.0.4-1
libc.so.6(GLIBC_2.4)
libstdc++.so.6
libc.so.6(GLIBC_2.1)
libgcc_s.so.1
libc.so.6(GLIBC_2.1.3)
rpmlib(PayloadIsXz) <= 5.2-1
libgcc_s.so.1(GCC_3.0)
libstdc++.so.6(CXXABI_1.3)
libc.so.6
libc.so.6(GLIBC_2.3.4)

Content of RPM :
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/README
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/ArcTest
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/ArcTest/ArcCanvas.class
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/ArcTest/ArcControls.class
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/ArcTest/ArcTest.class
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/ArcTest/ArcTest.java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/ArcTest/IntegerTextField.class
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/ArcTest/example1.html
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/BarChart
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/BarChart/BarChart.class
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/BarChart/BarChart.java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/BarChart/example1.html
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/BarChart/example2.html
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/Blink
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/Blink/Blink$1.class
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/Blink/Blink.class
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/Blink/Blink.java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/Blink/example1.html
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/CardTest
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/CardTest/CardPanel.class
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/CardTest/CardTest.class
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/CardTest/CardTest.java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/CardTest/example1.html
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/Clock
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/Clock/Clock.class
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/Clock/Clock.java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/Clock/example1.html
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.i386/demo/applets/DitherTest
There is 528 files more in these RPM.