Answer:
Explanation:
Based on the available options the one that would be correct would be that the code to define your class (beginning with "class bike") must come before the line "bikeA = bike('Acme' 111)." This is because the line of code declaring the object and initializing it needs to be able to grab the information of the class that it is creating an object of. To do this, the class would need to have already been compiled by the program. It is good practice to have each class definitions as its own separate files but this is not a necessity.
It should be advertisement. If not then it could be a search engine.
Answer:
Option b. ArrayList‹Integer› = new ArrayList‹Integer›(10) does not correctly declare an ArrayList.
<u>Explanation</u>:
ArrayList in Java dynamically stores elements in it. It also called as re- sizeable array as it expands in size when elements are added and decreases when an element is removed from it. This array list class also allows to use duplicate and null values.
The syntax for creating Array list is as follows
ArrayList<Type> obj = new ArrayList<Type>()
Type specifies the type of ArrayList like Integer, Character, Boolean etc, and obj is the object name. But in the option b ArrayList‹Integer› = new ArrayList‹Integer›(10) object name is missed and not specified.
Answer:
b. Wattage
Explanation:
wattage is the amount of electrical power a particular device can be able to use, mathematically wattage is calculated when you know the Current in amperes and the voltage in volts, which is power in watts = current in amperes x voltage in volts. since we expect James' computer is expected to consume more power than before the power supply wattage should be greater than or equals to the wattage of the computer.
Answer: Choice A) Storing customers' package tracking information
I'm assuming we're talking about a very large company. You could use a spreadsheet, but a database is more ideal since spreadsheets bog down at a certain point when there are too many data items in it. Databases are more dynamic and allow for better scalability. The term "scalability" means it can be easily grown or shrunk depending on the needs of the client.
Choice B is false because you could use a spreadsheet to show the family's budget. The budget isn't too big and the number of items to list aren't numerous, so that's why a spreadsheet is ideal. A database would be overkill for the family's budget. The same applies to choice C and D as well. So we can rule out choices C and D also.
