Which of the following declares an abstract method in an abstract Java class?
a. public abstract method();
b. public abstract void method();
c. public void abstract method();
d. public void method() {}
e. public abstract void method() {}
b In A, the method has no return type. In C, void and abstract are in a wrong order. In D, the abstract keyword is missing. In E, the body {} should be removed. The correct answer is B.
You might also like to view...
Identify three types of analysis that the star schema shown in Figure 32.1 can support about property sales.
What will be an ideal response?
Write the below functions in two ways: One with split and another with the csv module.
In the media folder, there is another piece of census data that includes city information, state-city-populations.csv. The first few lines of this file look like this: ``` SUMLEV,STATE,COUNTY,PLACE,COUSUB,CONCIT,FUNCSTAT,NAME,STNAME, CENSUS2010POP,ESTIMATESBASE2010,POPESTIMATE2010,POPESTIMATE2011, POPESTIMATE2012,POPESTIMATE2013 040,01,000,00000,00000,00000,A,Alabama,Alabama,4779736,4779758,4785570, 4801627,4817528,4833722 162,01,000,00124,00000,00000,A,Abbeville city,Alabama,2688,2688,2683,2690,2658,2651 162,01,000,00460,00000,00000,A,Adamsville city,Alabama,4522,4522,4519,4496,4474,4448 1 ``` 1. Write the findCityPopulation function that returns the population in 2013 (last field) of an input city. 2. Write a function findLargestCityInState and findSmallestCityInState to find the city with the largest and the smallest population (respectively) within a given state. Note: The findLargestCityInState functions are made more difficult as a row expressing the population of the state begins each section. Therefore, without checking for this an answer will likely find that the largest city in Alabama is Alabama. However it’s easy enough to avoid, as each state section has a first row value of 040. Additionally, since the list also contains towns and counties, to avoid getting one of those, its necessary to check that the potential city has the word “city” in it. 3. Use both your state and city functions to answer some questions. Find the state with the largest population, and the state with the smallest population. Is the smallest city in the largest state larger or smaller than the smallest city in the smallest state? Is the largest city in the largest state larger or smaller than the largest city in the smallest state?
Which of the following statements best describes a Trojan?
A. Malicious software that hides into the lower levels of the operating system and opens a backdoor B. Malicious software that records every key stroke and mouse movement C. Malicious software that disguises itself as a legitimate program D. Malicious software that takes the computer data hostage to extort money
Which of the following formatting options carries through to the export document?
A. Vertical justification B. Typeface C. Type style D. Horizontal alignment