I successfully installed and compiled the opencv on centos using the following method but I cant find any opencv_xxx.jar files anywhere ? that's why I think when I run the DetectFaceDemo.java program I get error "package org.opencv.core does not exist" and I have defined JAVA_HOME to a valid jdk environment before the cmake and make steps.
1.install all the required packages using yum
yum groupinstall "Development Tools"
yum install gcc
yum install cmake
yum install git
yum install gtk2-devel
yum install pkgconfig
yum install numpy
yum install ffmpeg
2.Create working directory and check out the source code
mkdir /opt/working
cd /opt/working
git clone https://github.com/Itseez/opencv.git
cd opencv
git checkout tags/2.4.8.2
3.Create the Makefile
mkdir release
cd release
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
4.Build and install
cd /opt/working/opencv/release
make
make install