What is difference between map and flatmap in java 8?
What is jdk jre and jvm?
What is aop java?
what is transient variable?
Who is at risk in java? : java security
What is Map,List,hashtable,ArrayList and difference between them??
Which framework is best for rest api java?
Name primitive java types.
What happens if javac is not recognized?
How do I create an executable jar file?
What is messaging queue in java?
What is a driver in java?
how ahstraction is the property of oops,this is also in c and c++ ex. printf function which is also hide the unnecessary data,so what is the difference ? and does c++ fallow the abstraction?