A simple Java program help.!

[Koka458]

I am a beginner in Java Programming. I am still doing my high-school......

 

I want to write a simple car comparison game. here is how.

 

[i use Eclipse] After running the program it will ask to type a car's name which is actually a number, then a 2nd car name.......then it will compare it and choose the winner.

 

I just want to know - how to input a no. as a word.... Example- Ferrari ...it is actually 7.5, then Mini ...it is 6. The program will just compare the numbers..and find the greater one....but it will print the car name as the answer.

 

Here is how I start:

import java.util.*;public class Carz{public static Scanner lP;public static void main (String args[]){lP= new Scanner (System.in);

[Tedster]

Code tags work without spaces in the tags:

[code] [/code]

Sadly, I can't tell how to help you.

[Koka458]

Code tags work without spaces in the tags:

[code] [/code]

Sadly, I can't tell how to help you.

Oh!.....But..I am just showing how I start a program.....Please...help...I clearly know out  teacher is never going to teach that for sure!!!

[Tedster]

Oh!.....But..I am just showing how I start a program.....Please...help...I clearly know out  teacher is never going to teach that for sure!!!

I know. I'm just talking about general forum code. I don't know Java, I'm just trying to help however I can.

[trama09]

I know. I'm just talking about general forum code. I don't know Java, I'm just trying to help however I can.

 

package car;import java.util.*;public class car {	final static double FERRARI = 7.5;	final static double MINI = 6;	static double betterCar = -1;	public static Scanner lP = new Scanner(System.in);	public static void main(String args[]) {		System.out.print("Type car name 1: ");		double car1 = lP.nextDouble();		System.out.print("Type car name 2: ");		double car2 = lP.nextDouble();		if (car1 > car2) {			betterCar = car1;		} else {			betterCar = car2;		}		if (betterCar == FERRARI) {			System.out.print("Better car is Ferrari");		}		if (betterCar == MINI) {			System.out.print("Better car is Mini");		}	}}

Quick and dirty. You can clean it up from there.

[MrSuperb]

no solutions to homeworks will be given here.

If you are stuck somewhere, tell us where.

[kichilron]

This is how you would do it:

 

https://docs.oracle.com/javase/tutorial/java/nutsandbolts/switch.html

[kichilron]

Quick and dirty. You can clean it up from there.

 

Switch-Statements are far better.

[MrSuperb]

 

 

package car;

 

 

how about no complete solutions?!

[trama09]

Switch-Statements are far better.

You cant do switch-case for doubles? 

[Koka458]

no solutions to homeworks will be given here.

If you are stuck somewhere, tell us where.

It's not a home work........just trying to how well I know programming...

& That program you gave doesn't seems to work..

[trama09]

It's not a home work........just trying to how well I know programming...

& That program you gave doesn't seems to work..

Works fine for me. You're supposed to use it and massage the best solution out of it.

[Koka458]

This is how you would do it:

 

https://docs.oracle.com/javase/tutorial/java/nutsandbolts/switch.html

Unfortunately that doesn't answers my question...

[Koka458]

Works fine for me. You're supposed to use it and massage the best solution out of it.

Ok....you almost got my point.......I want type ferrari...not 7.5...

[trama09]

 

Here is the error I am getting:

 

*Exception in thread "main" java.util.InputMismatchException

at java.util.Scanner.throwFor(Unknown Source)

at java.util.Scanner.next(Unknown Source)

at java.util.Scanner.nextDouble(Unknown Source)

at car.car.main(car.java:15)

 

Clear out your workspace, change Class name to match whatever you initially put in, massage from there.

And remove the package line.

[kichilron]

You cant do switch-case for doubles? 

 

Ain't double - and the perfect showcase of using a switch-statement. Especially considering the code-redudancy.

 

 

		if (betterCar == FERRARI) {			System.out.print("Better car is Ferrari");		}		if (betterCar == MINI) {			System.out.print("Better car is Mini");		}

[Koka458]

Clear out your workspace, change Class name to match whatever you initially put in, massage from there.

And remove the package line.

Sorry...but..you almost got my point.......I want type ferrari...not 7.5...

[trama09]

Sorry...but..you almost got my point.......I want type ferrari...not 7.5...

 

Oops. You should be able to figure it out from there.

[trama09]

Ain't double - and the perfect showcase of using a switch-statement. Especially considering the code-redudancy.

I tried to use a switch, but then I remembered that you can't with a double because of precision issues. 

Care to show me? I am curious to know what you mean.

[Koka458]

Oops. You should be able to figure it out from there.

Okay.....I'll try.....thank for the help....