Examples of java.util.Scanner.nextDouble()

java.util.Scanner.nextDouble()
Scans the next token of the input as a double. This method will throw InputMismatchException if the next token cannot be translated into a valid double value. If the translation is successful, the scanner advances past the input that matched.
If the next token matches the Float regular expression defined above then the token is converted into a double value as if by removing all locale specific prefixes, group separators, and locale specific suffixes, then mapping non-ASCII digits into ASCII digits via {@link Character#digit Character.digit}, prepending a negative sign (-) if the locale specific negative prefixes and suffixes were present, and passing the resulting string to {@link Double#parseDouble Double.parseDouble}. If the token matches the localized NaN or infinity strings, then either "Nan" or "Infinity" is passed to {@link Double#parseDouble(String) Double.parseDouble} as appropriate. @return the double scanned from the input @throws InputMismatchException if the next token does not match the Float regular expression, or is out of range @throws NoSuchElementException if the input is exhausted @throws IllegalStateException if this scanner is closed

      scanner.next();
      double defense = scanner.nextDouble();
      scanner.next();
      double base = scanner.nextDouble();
      scanner.next();
      double stab = scanner.nextDouble();
      scanner.next();
      double critical = scanner.nextDouble();
      scanner.next();
      double random = scanner.nextDouble();

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      scanner.next();
      double base = scanner.nextDouble();
      scanner.next();
      double stab = scanner.nextDouble();
      scanner.next();
      double critical = scanner.nextDouble();
      scanner.next();
      double random = scanner.nextDouble();
      
      int damage = (int)((((2.0 * level + 10) / 250) * (attack/defense) * base + 2)
        * stab * type * critical * random);

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      scanner.next();
      double stab = scanner.nextDouble();
      scanner.next();
      double critical = scanner.nextDouble();
      scanner.next();
      double random = scanner.nextDouble();
      
      int damage = (int)((((2.0 * level + 10) / 250) * (attack/defense) * base + 2)
        * stab * type * critical * random);
        
      output.println(damage);

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public class Lab5Ex1{
  public static void main(String[] args){
    System.out.print("Welcome to Bill Calculator!");
    Scanner keyboard = new Scanner(System.in);
    System.out.print("Price of the appetizer? ");
    double app = keyboard.nextDouble();
    System.out.print("Price of the main dish? ");
    double entre = keyboard.nextDouble();
    System.out.print("Price of the desert? ");
    double desert = keyboard.nextDouble();
    System.out.print("Tip rate? ");

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    System.out.print("Welcome to Bill Calculator!");
    Scanner keyboard = new Scanner(System.in);
    System.out.print("Price of the appetizer? ");
    double app = keyboard.nextDouble();
    System.out.print("Price of the main dish? ");
    double entre = keyboard.nextDouble();
    System.out.print("Price of the desert? ");
    double desert = keyboard.nextDouble();
    System.out.print("Tip rate? ");
    double tipRate = keyboard.nextDouble();
    double subtotal = app + entre + desert;

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    System.out.print("Price of the appetizer? ");
    double app = keyboard.nextDouble();
    System.out.print("Price of the main dish? ");
    double entre = keyboard.nextDouble();
    System.out.print("Price of the desert? ");
    double desert = keyboard.nextDouble();
    System.out.print("Tip rate? ");
    double tipRate = keyboard.nextDouble();
    double subtotal = app + entre + desert;
    double tax = subtotal * 15 / 100;
    double tip = subtotal * tipRate / 100;

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    System.out.print("Price of the main dish? ");
    double entre = keyboard.nextDouble();
    System.out.print("Price of the desert? ");
    double desert = keyboard.nextDouble();
    System.out.print("Tip rate? ");
    double tipRate = keyboard.nextDouble();
    double subtotal = app + entre + desert;
    double tax = subtotal * 15 / 100;
    double tip = subtotal * tipRate / 100;
    System.out.println("\nSubtotal: "+ subtotal );
    System.out.println("Tax: "+ tax );

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import java.util.Scanner;
public class Lab5Ex2{
  public static void main(String[] args){
    Scanner keyboard = new Scanner(System.in);
    System.out.print("Please input the first double ");
    double n1 = keyboard.nextDouble();
    System.out.print("Please input the second double ");
    double n2 = keyboard.nextDouble();
    System.out.print("Please input the third double ");
    double n3 = keyboard.nextDouble();
    System.out.print("The sum of "+ n1 + " and " + n2 + " is " + (n1+n2) + " which is");

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  public static void main(String[] args){
    Scanner keyboard = new Scanner(System.in);
    System.out.print("Please input the first double ");
    double n1 = keyboard.nextDouble();
    System.out.print("Please input the second double ");
    double n2 = keyboard.nextDouble();
    System.out.print("Please input the third double ");
    double n3 = keyboard.nextDouble();
    System.out.print("The sum of "+ n1 + " and " + n2 + " is " + (n1+n2) + " which is");
    if ( n1+n2 <= n3) {
      System.out.print(" not");

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    System.out.print("Please input the first double ");
    double n1 = keyboard.nextDouble();
    System.out.print("Please input the second double ");
    double n2 = keyboard.nextDouble();
    System.out.print("Please input the third double ");
    double n3 = keyboard.nextDouble();
    System.out.print("The sum of "+ n1 + " and " + n2 + " is " + (n1+n2) + " which is");
    if ( n1+n2 <= n3) {
      System.out.print(" not");
      }
    System.out.print(" greater than "+ n3 );

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