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Answer 8

Question 9

True or False: The program code shown in Listing 3 will compile and execute successfully to produce an output similar to that shownin Figure 2 .

Listing 3 - Question 9.
/*File Q09.java ************************************************/import java.util.*; public class Q09{ArrayList var1 = new ArrayList();void runIt(){var1.add(new Date()); var1.add("abcd");System.out.println( ((Date)var1.get(1)).getTime());System.out.println( ((String)var1.get(1)).length());}//end runIt public static void main(String[]args){ new Q09().runIt();}//end main}//end class Q09 //=============================================//
Figure 2 - Question 9.
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Answer 9

Question 10

The code shown in Listing 4 will not compile and run successfully. Without using a cast operator, what changes can you make to theclass named Q10 to cause the program to compile and run successfully and to produce the current time in milliseconds?

Listing 4 - Question 10.
/*File Q10.java ************************************************/import java.util.*; public class Q10{ArrayList var1 = new ArrayList();void runIt(){ var1.add(new Date());//Note the required cast in the following // statement.System.out.println( (var1.get(0)).getTime());}//runIt public static void main(String[]args){ new Q10().runIt();}//end main}//end class Q10 //=============================================//

Answer 10

Question 11

True or False: Using Java v1.7, even with the empty angle brackets shown in the instantiation of the ArrayList object in Listing 5 , the program in Listing 5 will compile and run successfully with no notes, warnings, errors, or othercomplaints from the compiler. The program will produce an output similar to that shown in Figure 3 .

Listing 5 - Question 11.
/*File Q11.java ************************************************/import java.util.*; public class Q11{ArrayList<Date>var1 = new ArrayList<>(); void runIt(){var1.add(new Date()); //Note the required cast in the following// statement. System.out.println((var1.get(0)).getTime()); }//runItpublic static void main(String[] args){new Q11().runIt(); }//end main}//end class Q11//=============================================//
Figure 3 - Question 11.

Answer 11

Question 12

True or False: The program shown in Listing 6 will compile and run successfully producing an output similar to that shown in Figure 4 .

Listing 6 - Question 12.
/*File Q12.java ************************************************/import java.util.*; public class Q12{ArrayList<Date>var1 = new ArrayList<Date>();void runIt(){ var1.add("abcd");System.out.println(var1.get(0).getTime()); }//end runItpublic static void main(String[] args){new Q12().runIt(); }//end main}//end class Q12 //=============================================//
Figure 4 - Question 12.

Answer 12

Question 13

True or False: The code shown in Listing 7 will compile and run successfully and produce the output shown in Figure 5 .

Questions & Answers

how did Mc connel defined economics
Isaac Reply
what is a economy planning?
Jacob Reply
what is demand
Sunday Reply
demand means desire for a commodity backed by willingness & ability to pay for that commodity
what is supply
supply means suppliers supplying more commodities when price's high or less when price's low to satisfy human want
the coefficient of price elasticity of supply is the measure of percentage change in the quantity supplied of a good due to a given percentage change in its price.
Please what is Economics of Scales?
what is cardinal and ordinal utility?
Cardinal utility is the satisfaction derived by the consumers from the consumption of goods and services while ordinal is ranked in terms of preference.
Please explain what is meant by Economic Integration?
Please I need help!!!!
economics scales I don't know but I know laws of returns to scale
can someone help explain to me what is fairly inelastic dd
Economics Economics - The study of how people use their limited resources to try to satisfy unlimited wants
Economic integration has been one of the main economic developments affecting international trade in the last years. Countries have wanted to engage in economic cooperation to use their respective resources more effectively and to provide large markets for member-countries of the resulting integrate
Inelastic Demand When consumers are relatively unresponsive to price changes. A PED coefficient of less than one means that a particular change in the price of a good will be met by a proportionally smaller change in the quantity demanded.
what is development planning?
Emmanuel Reply
What is economics?
Shubham Reply
economics is study of scarcity and how humans make decisions.
reason for development planning in West Africa
what is development planning?
What is homo Economicus?
nongo Reply
when a person is part 50% rational and the other part of him is 50% focused on money as an incentive
what makes the economy to be stable
what measures are necessary to the economy which is not doing fine
must find out the problems originating from and take remedy for it.
Economics as a social science Discuss
list and explain three implication of balance of payment disequilibrium
Jayson Reply
In economics pollution, what's spillover?
Chinedum Reply
what is net national income
Ibrahim Reply
relation between business economics and traditional economics
Netra Reply
more explanation on GDP
Isaac Reply
it is a country total out put of goods and services divided by the total population of the country.I think it can also be derived from the country labour force,,because it mostly depend on the labour force and the level of technology .
labour force and technological progress leads to greater production increases the GDP
what is elasticity of demand
degree of responsiveness of demand to changes in price and other factors that influence demand.
It is the degree of responsiveness of demand and supply to a little change in price of a goods and services
What is economics?
Bubu Reply
by this time
It is a social science that analyses production,distribution and consumption of goods and services
A social science that study human behavior in relationship with decision making
a social science that studies human behavior as a relationship between ends and scarce means which has alternative uses
it is a science that study human begin as a relation to ends and scarce should which have alternative uses
the science in which we study about the investement of our wealth.
what is competitive demand
a competitive demand is also known as substitute demand .the moment the price of the commodity increase consumers will purchase the other other commodity which it's price is low and the vice versa. an example is milo and bournvita
what is different between equilibrium and demand?
equilibrium is a situation where market is stable there is no entry nor exit. demand is the willingness to pay Which is backed by law.
list and explain three implication of balance of payment disequilibrium?
Economics is a social science that study's human behaviour as a relationship between ends and scares means which have alternative uses
What are the typical patterns of GDP for a high-income economy like the United States in the long run and the short run?
mwangala Reply
What are the limitation and significant of macroeconomic
Usman Reply
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Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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