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How to get User Input twice in Java?
I learned that, we can use Scanner method to get user input like: Scanner Input = new Scanner(System.in); But what if I need two input from user? When I try: Scanner Runs = new Scanner(System.in); Scanner Overs = new Scanner(System.in); I get an error! What can I do?
6 ответов
+ 3
You can get multiple user inputs from the same instance of Scanner.
Here is an example:
Scanner input = new Scanner(System.in);
int x = input.nextInt();
int y = input.nextInt();
You should use at most 1 scanner per input stream so only 1 scanner for System.in.
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You cant do this here in sololearn you have only one input were you can enter text on diffrent lines.
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Tanvir wrote, "...My question was getting two different inputs, such as Runs, Overs, Balls, Wickets.
I wanted to programe a ratio-calculator. Such as Runs per over, Wicket per balls.
How can I get Input twice? (I mean, I need two different inputs)"
Answer:
It would help to see what format of input you want to process. It sounds like this is related to cricket and I don't know even what overs and wickets are.
Do you want 4 integers in and just 2 ratios as output?
Input in the order of (number of runs) overs balls wickets:
10 5 20 2
Output:
Runs over Overs: 2.0
Wicket per balls: 0.1
That would be because 5 / 10 = 2.0. Also 2 / 20 = 0.1.
Here is an implementation of the above:
Scanner input = new Scanner(System.in);
int balls = input.nextInt();
int runs = input.nextInt();
int overs = input.nextInt();
int wickets = input.nextInt();
System.out.println("Runs over Overs: " + (runs * 1.0 / overs));
System.out.println("Wickets per balls: " + (wickets * 1.0 / balls));
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You only need to create one instance of scanner,
You need to do the following
import scanner class.
//this is your object
Scanner sc = new Scanner(System.in);
//this is the first line of input
String line1 = sc.nextLine();
//this is your second line of input
String line2 = sc.nextLine();
System.out.print(line1+line2);
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But guys, that means I can use given the information as many time as I want. My question was not this.
My question was getting two different inputs, such as Runs, Overs, Balls, Wickets.
I wanted to programe a ratio-calculator. Such as Runs per over, Wicket per balls.
How can I get Input twice? (I mean, I need two different inputs)
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Tanvir Mahfuz, can you explain in detail or share your code?