forked from snychka/java-first-program
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathFinance.java
More file actions
54 lines (52 loc) · 2.14 KB
/
Copy pathFinance.java
File metadata and controls
54 lines (52 loc) · 2.14 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
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));
}
}