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  2. This Scanner class comes under java.util, hence the first line of the program is import java.util.Scanner; which allows the user to read values of various types in Java. The import statement line should have to be in the first line the java program, and we proceed further for code.

  3. String input=key.next(); // you can also write key.nextLine to take a String with spaces also. char firstChar=input.charAt(0); char charAtAnyPos= input.charAt(pos); // in pos you enter that index from where you want to get the char from. By the way, you can't take a char directly as an input.

  4. I am working on a Java program that reads a text file line-by-line, each with a number, takes each number throws it into an array, then tries and use insertion sort to sort the array.

  5. The hasNextLine/hasNext methods always return true for the keyboard (System.in). The only way I've found to clear all buffered data without blocking is to open a new scanner: in.close (); in = new Scanner (System.in); @Georgie You would want to create the new Scanner without closing the old one.

  6. Scanning double with Scanner in Java from Console

    stackoverflow.com/questions/38694866

    3. Think it is a Problem with the decimal separator. Try the input 10,0. If you want to scan the value with dot, set the locale to locale UK: Scanner scan = new Scanner(System.in); scan.useLocale(Locale.UK); double d = scan.nextDouble(); System.out.println("Double: " + d); answered Aug 1, 2016 at 9:13.

  7. But Scanner can define where a token starts and ends based on a set of delimiter, wich could be specified in two ways: Using the Scanner method: useDelimiter(String pattern) Using the Scanner method : useDelimiter(Pattern pattern) where Pattern is a regular expression that specifies the delimiter set.

  8. I need to read spaces (present before string and after String) given as input using Scanner Note : if there is no spaces given in input it should not add space in output Please find the below co...

  9. 39. Use Scanner.hasNextInt (): Returns true if the next token in this scanner's input can be interpreted as an int value in the default radix using the nextInt () method. The scanner does not advance past any input. Here's a snippet to illustrate: Scanner sc = new Scanner (System.in); System.out.print ("Enter number 1: "); while (!sc.hasNextInt ...

  10. 0. Print the row and col number and then the entre the matix data and print it in matrix form. Scanner scan = new Scanner (System.in); System.out.println ("Enter The Number Of Matrix Rows"); int row = scan.nextInt (); System.out.println ("Enter The Number Of Matrix Columns"); int col = scan.nextInt (); //defining 2D array to hold matrix data ...

  11. Java scanner input if statement - Stack Overflow

    stackoverflow.com/questions/22995710

    With the Scanner . Scanner scan = new Scanner(System.in); and the methods ( read API for detail) next() - would read next characters until it found space ( or the delimiter used. by default space) and return String. nextInt() - would read next characters until it found space ( or the delimiter used. by default space) and convert it into int and ...