difference between abstraction and encapsulation ?

Is abstraction and abstract class is same ?

difference between abstraction and interface

7.can muliple inheritan e possible in java using abstract class 8.what is o/p of below code interface a{ int i=10} interface b{ int i=5} class c a,b{ sop(i) } o/p:? 9.write code for jdbc connection in java 10.how Hashmap internally work 11.write code to retrieve elements from hashtable 12.diff between vector and arraylist 13.what is synchronization 14.what ibm websphere?is it application server or web server?why you use it? 15.diff between application server and web server 16.what is o/p of below code class a { int i=10} class b { int i=5} public class c extends a,b{ psvm{ sop(i) } }