Option menu that increases and decreases with number of arraylist objects
I've created a for loop that lists all objects in my array-list but i need it to be a dynamic option menu that always ends with exit. I have used switch case option menu in other parts of the program in different methods. But I'm not sure how to create an incrementing case switch in here or if it would have to be put into the for loop?
private static void subCar(Scanner keyboard, CarLot carLot) {
if (carLot.getCar().size() == 0) {
System.out.println("No Cars on the Car Lot to Remove");
}else {
System.out.println("");
System.out.println("Cars Available to Remove: ");
System.out.printf("%-7s%-6s%-35s%-5sn","Option"," ID","Make/Model/Year","Price");
for (int index=0; index < carLot.getCar().size(); index++) {
System.out.printf("%-7s%-6s%-2s%-5sn",carLot.getCar().get(index).getID(),
carLot.getCar().get(index).getMake(),carLot.getCar().get(index).getModel(),
carLot.getCar().get(index).getPrice());
}
}
}
I'm trying to create a menu option so I can select which object to delete from my array-list
I want the output to look like this:
option ID Make/Model/Year Price
1. 2 Chevrolet cavalier 2000 1999.99
2. Exit
enter option:
exit option needs to always come last
java arraylist switch-statement optionmenu
edited Nov 14 '18 at 1:58
azro
10.9k41438
asked Nov 14 '18 at 1:47
S-JayS-Jay
31
add a comment |
I've created a for loop that lists all objects in my array-list but i need it to be a dynamic option menu that always ends with exit. I have used switch case option menu in other parts of the program in different methods. But I'm not sure how to create an incrementing case switch in here or if it would have to be put into the for loop?
private static void subCar(Scanner keyboard, CarLot carLot) {
if (carLot.getCar().size() == 0) {
System.out.println("No Cars on the Car Lot to Remove");
}else {
System.out.println("");
System.out.println("Cars Available to Remove: ");
System.out.printf("%-7s%-6s%-35s%-5sn","Option"," ID","Make/Model/Year","Price");
for (int index=0; index < carLot.getCar().size(); index++) {
System.out.printf("%-7s%-6s%-2s%-5sn",carLot.getCar().get(index).getID(),
carLot.getCar().get(index).getMake(),carLot.getCar().get(index).getModel(),
carLot.getCar().get(index).getPrice());
}
}
}
I'm trying to create a menu option so I can select which object to delete from my array-list
I want the output to look like this:
option ID Make/Model/Year Price
1. 2 Chevrolet cavalier 2000 1999.99
2. Exit
enter option:
exit option needs to always come last
java arraylist switch-statement optionmenu
edited Nov 14 '18 at 1:58
azro
10.9k41438
asked Nov 14 '18 at 1:47
S-JayS-Jay
31
putcarLot.getCar().get(index)in a variable, and then access to its properties, don't access the list all time
– azro
Nov 14 '18 at 1:58
have you thought about using a stack or queue made from your arraylist?
– Thatalent
Nov 14 '18 at 2:09
add a comment |
I've created a for loop that lists all objects in my array-list but i need it to be a dynamic option menu that always ends with exit. I have used switch case option menu in other parts of the program in different methods. But I'm not sure how to create an incrementing case switch in here or if it would have to be put into the for loop?
private static void subCar(Scanner keyboard, CarLot carLot) {
if (carLot.getCar().size() == 0) {
System.out.println("No Cars on the Car Lot to Remove");
}else {
System.out.println("");
System.out.println("Cars Available to Remove: ");
System.out.printf("%-7s%-6s%-35s%-5sn","Option"," ID","Make/Model/Year","Price");
for (int index=0; index < carLot.getCar().size(); index++) {
System.out.printf("%-7s%-6s%-2s%-5sn",carLot.getCar().get(index).getID(),
carLot.getCar().get(index).getMake(),carLot.getCar().get(index).getModel(),
carLot.getCar().get(index).getPrice());
}
}
}
I'm trying to create a menu option so I can select which object to delete from my array-list
I want the output to look like this:
option ID Make/Model/Year Price
1. 2 Chevrolet cavalier 2000 1999.99
2. Exit
enter option:
exit option needs to always come last
java arraylist switch-statement optionmenu
edited Nov 14 '18 at 1:58
azro
10.9k41438
asked Nov 14 '18 at 1:47
S-JayS-Jay
31
I've created a for loop that lists all objects in my array-list but i need it to be a dynamic option menu that always ends with exit. I have used switch case option menu in other parts of the program in different methods. But I'm not sure how to create an incrementing case switch in here or if it would have to be put into the for loop?
private static void subCar(Scanner keyboard, CarLot carLot) {
if (carLot.getCar().size() == 0) {
System.out.println("No Cars on the Car Lot to Remove");
}else {
System.out.println("");
System.out.println("Cars Available to Remove: ");
System.out.printf("%-7s%-6s%-35s%-5sn","Option"," ID","Make/Model/Year","Price");
for (int index=0; index < carLot.getCar().size(); index++) {
System.out.printf("%-7s%-6s%-2s%-5sn",carLot.getCar().get(index).getID(),
carLot.getCar().get(index).getMake(),carLot.getCar().get(index).getModel(),
carLot.getCar().get(index).getPrice());
}
}
}
I'm trying to create a menu option so I can select which object to delete from my array-list
I want the output to look like this:
option ID Make/Model/Year Price
1. 2 Chevrolet cavalier 2000 1999.99
2. Exit
enter option:
exit option needs to always come last
java arraylist switch-statement optionmenu
java arraylist switch-statement optionmenu
edited Nov 14 '18 at 1:58
azro
10.9k41438
asked Nov 14 '18 at 1:47
S-JayS-Jay
31
edited Nov 14 '18 at 1:58
azro
10.9k41438
asked Nov 14 '18 at 1:47
S-JayS-Jay
31
edited Nov 14 '18 at 1:58
azro
10.9k41438
edited Nov 14 '18 at 1:58
azro
10.9k41438
edited Nov 14 '18 at 1:58
azro
10.9k41438
10.9k41438
asked Nov 14 '18 at 1:47
S-JayS-Jay
31
asked Nov 14 '18 at 1:47
S-JayS-Jay
31
asked Nov 14 '18 at 1:47
S-JayS-Jay
31
31
putcarLot.getCar().get(index)in a variable, and then access to its properties, don't access the list all time
– azro
Nov 14 '18 at 1:58
have you thought about using a stack or queue made from your arraylist?
– Thatalent
Nov 14 '18 at 2:09
add a comment |
putcarLot.getCar().get(index)in a variable, and then access to its properties, don't access the list all time
– azro
Nov 14 '18 at 1:58
have you thought about using a stack or queue made from your arraylist?
– Thatalent
Nov 14 '18 at 2:09
put
carLot.getCar().get(index) in a variable, and then access to its properties, don't access the list all time– azro
Nov 14 '18 at 1:58
put
carLot.getCar().get(index) in a variable, and then access to its properties, don't access the list all time– azro
Nov 14 '18 at 1:58
have you thought about using a stack or queue made from your arraylist?
– Thatalent
Nov 14 '18 at 2:09
have you thought about using a stack or queue made from your arraylist?
– Thatalent
Nov 14 '18 at 2:09
add a comment |
1 Answer
1
active
oldest
votes
Your last option will always be bigger then size of list of cars.
int option = //read it form scanner;
if (option > carLot.getCar().size()) {
// exit
} else {
carLot.getCar().remove(option);
}
To print all options and an exit one. You need to extract index outside the loop, loop and one print after loop. One of the example:
int index = 0;
for (; index < carLot.getCar().size(); index++) {
System.out.printf("%-7s%-6s%-2s%-5sn",
index,
carLot.getCar().get(index).getID(),
carLot.getCar().get(index).getMake() + " " + carLot.getCar().get(index).getModel(),
carLot.getCar().get(index).getPrice());
}
System.out.printf("%-7s%-6s", index, "Exit");
answered Nov 14 '18 at 1:56
uliuli
519313
add a comment |
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1 Answer
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votes
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active
oldest
votes
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oldest
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oldest
votes
Your last option will always be bigger then size of list of cars.
int option = //read it form scanner;
if (option > carLot.getCar().size()) {
// exit
} else {
carLot.getCar().remove(option);
}
To print all options and an exit one. You need to extract index outside the loop, loop and one print after loop. One of the example:
int index = 0;
for (; index < carLot.getCar().size(); index++) {
System.out.printf("%-7s%-6s%-2s%-5sn",
index,
carLot.getCar().get(index).getID(),
carLot.getCar().get(index).getMake() + " " + carLot.getCar().get(index).getModel(),
carLot.getCar().get(index).getPrice());
}
System.out.printf("%-7s%-6s", index, "Exit");
answered Nov 14 '18 at 1:56
uliuli
519313
add a comment |
Your last option will always be bigger then size of list of cars.
int option = //read it form scanner;
if (option > carLot.getCar().size()) {
// exit
} else {
carLot.getCar().remove(option);
}
To print all options and an exit one. You need to extract index outside the loop, loop and one print after loop. One of the example:
int index = 0;
for (; index < carLot.getCar().size(); index++) {
System.out.printf("%-7s%-6s%-2s%-5sn",
index,
carLot.getCar().get(index).getID(),
carLot.getCar().get(index).getMake() + " " + carLot.getCar().get(index).getModel(),
carLot.getCar().get(index).getPrice());
}
System.out.printf("%-7s%-6s", index, "Exit");
answered Nov 14 '18 at 1:56
uliuli
519313
add a comment |
Your last option will always be bigger then size of list of cars.
int option = //read it form scanner;
if (option > carLot.getCar().size()) {
// exit
} else {
carLot.getCar().remove(option);
}
To print all options and an exit one. You need to extract index outside the loop, loop and one print after loop. One of the example:
int index = 0;
for (; index < carLot.getCar().size(); index++) {
System.out.printf("%-7s%-6s%-2s%-5sn",
index,
carLot.getCar().get(index).getID(),
carLot.getCar().get(index).getMake() + " " + carLot.getCar().get(index).getModel(),
carLot.getCar().get(index).getPrice());
}
System.out.printf("%-7s%-6s", index, "Exit");
answered Nov 14 '18 at 1:56
uliuli
519313
Your last option will always be bigger then size of list of cars.
int option = //read it form scanner;
if (option > carLot.getCar().size()) {
// exit
} else {
carLot.getCar().remove(option);
}
To print all options and an exit one. You need to extract index outside the loop, loop and one print after loop. One of the example:
int index = 0;
for (; index < carLot.getCar().size(); index++) {
System.out.printf("%-7s%-6s%-2s%-5sn",
index,
carLot.getCar().get(index).getID(),
carLot.getCar().get(index).getMake() + " " + carLot.getCar().get(index).getModel(),
carLot.getCar().get(index).getPrice());
}
System.out.printf("%-7s%-6s", index, "Exit");
answered Nov 14 '18 at 1:56
uliuli
519313
edited Nov 14 '18 at 2:09
answered Nov 14 '18 at 1:56
uliuli
519313
answered Nov 14 '18 at 1:56
uliuli
519313
answered Nov 14 '18 at 1:56
uliuli
519313
519313
add a comment |
add a comment |
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put
carLot.getCar().get(index)in a variable, and then access to its properties, don't access the list all time– azro
Nov 14 '18 at 1:58
have you thought about using a stack or queue made from your arraylist?
– Thatalent
Nov 14 '18 at 2:09