JAVA英文笔试题
is Oracle.
is major differenece oracle8i and oracle9i.
me some thing ur self.
se tell me about oops.
is single inheritance.
is multiple inheritance.
java support multiple inheritance.
is interface.
is differenec between abstract class and interface.
to u prove that abstrace class cannot instantiate directly.
is differenece between string and stringbuffer.
is immutable
to write a program using sort program.
15 how to write a program using unsort program.
is legacy.
is legacy api
is legacy interface.
is main difference hashmap and hastable
is main difference between arraylist and vector.
1. Oracle is an RDBMS product with DDL and DML from a company called Oracle Inc.
2. Difference between 8i and 9i is given in the Oracle site
3. Question not available
4. Something
5. oops is Object Oriented Programming
is single inheritance.
ans:one class is inherited by only other one class
is multiple inheritance.
ans:One class inheriting more than one class at atime
java support multiple inheritance.
ans:No
is interface.
ans:Interface has only method declarations but no defn
is differenec between abstract class and interface.
ans:In abstract class some methods may contain definition,but in interface every method should be abstract
to u prove that abstrace class cannot instantiate directly.
ans:As they dont have constructor they cant be instantiated
is differenece between string and stringbuffer.
ans:Strings are immutable where as string buffer can be modified
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