Hello Sony,
Can you try to donwgrade JRE to previous version ?
OR
Try solution form there http://stackoverflow.com/questions/19756681/introscope-8-2-2-does-not-work-with-java-7
Run Java's ContolPanel and reduce your security settings. Caveat -- this setting applies to all applets and Java Web Start (jnlp) applications.
BR,
K.