Question about allowing the user jump back to the start of the program? Help please!

[JavaProg]

This is my program to calculate Speed, distance or time, given the other two variables. This is working perfectly, thankfully. However, I now wish to add a prompt at the end asking if the user would like to go again, I have been fiddling around with it but can't seem to find anything that will work. Basically if the user answers "yes" to question " Would you like to start again?", I want the program to go again for him. Assumed there would be something simple but haven't found anything yet!

Help truly appreciated!
Jack














import java.util.Scanner;

class SDTCalc{
public static void main(String [] args){
double dist;
double time;
double speed;
String target;
Scanner jack = new Scanner(System.in);
System.out.println("Are you looking for speed, distance or time? ");
target = jack.nextLine();

if (target.equals("Speed") || target.equals("speed")) {
System.out.println("Please enter a value for Distance (km): ");
dist = jack.nextDouble();
System.out.println("Please enter a value for Time (hours): ");
time = jack.nextDouble();
System.out.println("Answer: " + dist/time + " km/h ");

}
else if (target.equals("Distance") || target.equals("distance")) {
System.out.println("Please enter a value for Speed (km/h): ");
speed = jack.nextDouble();
System.out.println("Please enter a value for Time (hours): ");
time = jack.nextDouble();
System.out.println("Answer: " + speed*time + " km ");
}
else if (target.equals("Time") || target.equals("time")) {
System.out.println("Please enter a value for Speed (km/h): ");
speed = jack.nextDouble();
System.out.println("Please enter a value for Distance (km): ");
dist = jack.nextDouble();
System.out.println("Answer: " + dist/speed + " hours ");


}
else{
System.out.println("Oooooooops " + target + " is not a valid choice! ");
}
}
}

[JosAH]

I (and others) answered this exact same question here: http://www.java-forums.org/new-java/...tml#post243375.

kind regards,

Jos

[Cosmos]

just add the code in a do{}while loop....

in loop add this too-

BufferedReader br=new BufferedReader(new InputStreamReader(System.in);

and at the end of the loop,i.e. in the last line add this-

try{

System.out.println("do u want to continue?<yes/no>");
choice=br.readLine();//make a String choice at the beginning of the program

}catch(IOException ie){System.out.println(ie);}

and in the end add condition to the while loop-

do{}while(choice.equals("yes"));

so the code should be like this-

do{
BuffereReader br=new BufferedReader(new InputStreamReader(System.in));

//your code here

try{

System.out.println("do u want to continue?<yes/no>");
choice=br.readLine();//make a String choice at the beginning of the program

}catch(IOException ie){System.out.println(ie);}

}while(choice.equals("yes));