-
Notifications
You must be signed in to change notification settings - Fork 559
Expand file tree
/
Copy pathFinance.java
More file actions
66 lines (55 loc) · 2.2 KB
/
Copy pathFinance.java
File metadata and controls
66 lines (55 loc) · 2.2 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
import com.h2.BestLoanRates;
import com.h2.MortgageCalculator;
import com.h2.SavingsCalculator;
import java.util.Arrays;
import java.util.Map;
public class Finance {
public final static String BEST_LOAN_RATES = "bestLoanRates";
public final static String SAVINGS_CALCULATOR = "savingsCalculator";
public final static String MORTGAGE_CALCULATOR = "mortgageCalculator";
public final static Map<String, String> commandsToUsage = Map.of(
BEST_LOAN_RATES, "usage: bestLoanRates",
SAVINGS_CALCULATOR, "usage: savingsCalculator <credits separated by ','> <debits separated by ','>",
MORTGAGE_CALCULATOR, "usage: mortgageCalculator <loanAmount> <termInYears> <annualRate>"
);
private static boolean validateCommandArguments(String[] args) {
switch (args[0]) {
case BEST_LOAN_RATES:
return args.length == 1;
case SAVINGS_CALCULATOR:
return args.length == 3;
case MORTGAGE_CALCULATOR:
return args.length == 4;
}
return false;
}
private static void executeCommand(String command, String[] arguments){
switch(command) {
case BEST_LOAN_RATES:
System.out.println("Finding best loan rates ...");
BestLoanRates.main(arguments);
return;
case SAVINGS_CALCULATOR:
System.out.println("Finding your net savings ...");
SavingsCalculator.main(arguments);
return;
case MORTGAGE_CALCULATOR:
System.out.println("Finding your monthly payment ...");
MortgageCalculator.main(arguments);
return;
}
}
public static void main(String[] args) {
String command = args[0];
if (!commandsToUsage.containsKey(command)) {
System.out.println(command + ": command not found");
return;
}
boolean isValidCommand = validateCommandArguments(args);
if (!isValidCommand) {
System.out.println(commandsToUsage.get(args[0]));
return;
}
executeCommand(command, Arrays.copyOfRange(args, 1, args.length));
}
}