Can I use a variable to name other variables?

Java static variables problems...?

• Create a class named Household that includes data fields for the household name, number of occupants and the total monthly household income. In your class, include the following methods: A method to calculate and return the average income per occupant. Use the following method header: double computeAverageIncome() A method to display the data field values. Note: Below is the part I don't understand... (Using static variables and methods) Suppose you want to store the national average total monthly household income. Note that this value is revised every year. Modify the Household class accordingly. ______________________________________… This is the code I have so far... public class Household { // three fields String houseName; int occupantNum; double houseIncome; static double average; // calculate average method double computeAverageIncome() { average = houseIncome/occupantNum; return average; } public void output() { average = computeAverageIncome(); System.out.printf("\nAverage income per occupant is: %1.2f", average); } } ______________________________________… So, what does it means by it will revised every year. And does my calculations for the average is wrong? Very thanks you.

• Answer:

  First of all , yes ! your average calculation is perfect :) and revised every year means that your data for national average household income to be refreshed and recalculated each year again ! let that national average be stored in this variable : static double NationalAverage = anything ; (or lets simply assume Rs. 50000) Now lets compare your household income to this national one : if(average < NationalAverage) System.out.println("BELOW NATIONAL Average"); else if(average > NationalAverage) System.out.println("Above N.A"); else System.out.println("Same as N.A");