JDK 1.6.0 is . Oracle (and Sun before it) stopped public updates for Java 6 years ago. Security vulnerabilities are unpatched, and it lacks modern features like try-with-resources, lambdas, or the java.time API.
Xinox no longer actively sells JCreator Pro through their old channels, but the free LE version is widely available as abandonware. jcreator jdk 1.6.0 free download