Answer:
Interfaces are way to use full abstraction.That;s why it is preffered over implementations.
Interfaces are just like class.But the methods declared inside an abstract class are by default abstract and the variables are by default static,final.Which is not the case with classes in classes the variables can be static or non- static ,fincal or non-final and methods can be abstract or non-abstract.
Java classes does not support multiple inheritance but interfaces support multiple inheritance.So whenever we want to implement multiple inheritance in Java we use interfaces.
Answer:
True is the correct answer for the above questions.
Explanation:
- A data dictionary is used to hold the structure and definition of the database. It is because it is used to hold information about the database or operational database.
- It is a set of schema through which the user can understand the structure of the database. It can be used to define the metadata also. The metadata detailed the data of a database.
- The above question-statement also wants to states about the same which is described above which is the definition of the data dictionary. Hence it is a true statement.
Answer:
Click in the cell (or select multiple cells) that contains text you want to align. The Table Tools tab appears. Click the Layout tab under the Table Tools heading. … If you change the alignment of blank cells, any new text you type in those blank cells will appear according to the alignment you choose.
Explanation:
The only syntax error I saw was that the re pattern should have been double quoted.
Other
non-syntax errors are: the import statement doesn't have a valid module
name. It should be "import re" . Since tutorGroup is double quoted in
the re.match(), it becomes a string, not the variable from the input()
function.
