Question

What is the difference in between these two in Drools ??
Means taht we can fire the rules based on the

Creating the WorkingMemory from the loaded Rules RulesBase and firing rules as shown below :

WorkingMemory  workingmemory = rulebase.newWorkingMemory();
workingmemory.fireAllRules();

vs

Using a Session (Stateful . Stateless ) to fire the rules as shown

KnowledgeBase knowledgebase = createKnowledgeBase();
StatefulKnowledgeSession session = knowledgebase.newStatefulKnowledgeSession();
session.insert(Object);
session.fireRules();

Answer 1

Use KnowledgeBAse and KnowledgeSession, of knowledge-api-.jar. RuleBase and WorkingMemory are the legacy interfaces and will be removed in the future.