@Override
                public void run() {
                    InputStream inputStream = proc.getInputStream();
                    try {
                        IOUtils.copy(inputStream, System.out);
                    } catch (IOException e) {
                        IOUtils.close(inputStream);
                    }

                }
<pre>
1. Try to find java home from System Property java.home
2. If jdk > 8, FOUND_JAVA_HOME set to java.home
3. If jdk <= 8, try to find tools.jar under java.home
4. If tools.jar do not exists under java.home, try to find System env JAVA_HOME
5. If jdk <= 8 and tools.jar do not exists under JAVA_HOME, throw IllegalArgumentException
</pre>

@return
cop/src/main/java/code/landgrey/copagent/utils/ProcessUtils.java