You can run something like this: int numOfLines; //stores num of lines that will be inputted Scanner reader = new Scanner(System.in); //assuming you already imported before this numOfLines = reader.nextInt(); //captures 1st user inputted value int[] nums = new int[numOfLines]; //creates array object to captures all further values for (int i = 0;i<numOfLines-1;i++){ nums[i] = … Read more
Assuming you’re using scanner, yes, it could. The scanner operates on the notion that a regexp serves as delimiter: Each match of the regex delimits, and whatever the regexp matches is tossed out (because nobody ‘cares’ about reading the spaces or the commas or whatever). The scanner then gives you stuff in between the delimiters. … Read more
The value 65533 is 0xFFFD. This is the Unicode “Replacement Character” which is used in place of a character that is unrepresentable. It is normally displayed as “�”. The reason you are getting this could be because your standard input (keyboard?) is not capable of producing the character “Δ. Try putting this character into a … Read more
private ArrayList<Student> readFile() throws FileNotFoundException { String fName = “p02-students.txt”; Scanner scan = new Scanner(new File(fName)); ArrayList<Student> studentList = new ArrayList<Student>(); while (scan.hasNext()) { String studentType = scan.next(); if (studentType.equals(“C”)) { studentList.add(readOnCampusStudent(scan)); } else { studentList.add(readOnlineStudent(scan)); } scan.nextLine(); } scan.close(); return studentList; } I didn’t get the error you mentioned earlier, but I was getting … Read more
Your code was mostly correct: You had some typos that would prevent your code compiling successfully. You should consider using an IDE such as Eclipse, as it will highlight these kinds of issues for you as you type. You shouldn’t create a 2nd Scanner object, reuse the existing one Be sure to close your Scanner … Read more
This should work. if you are not using an IDE, then maybe you changed your code and didn’t compile again. so you are essentially running an old code with different output? 2 solved Java Input from console giving unexpected values [closed]
Two things: Remove semi-colon after if condition and use System.out.print() instead if you want input on the same line. 1 solved Why won’t this scanner accept input on the println? [closed]
You are reading a RTF Document. If you want to read the text only you can try reading it into a byte array and parsing out the text using swings rtfeditorkit. Path path = Paths.get(“path/to/file”); byte[] data = Files.readAllBytes(path); RTFEditorKit rtfParser = new RTFEditorKit(); Document document = rtfParser.createDefaultDocument(); rtfParser.read(new ByteArrayInputStream(data), document, 0); String text = … Read more
I ran your code just as it is, and it printed it both in uppercase and lowercase, but I noticed you had a comment that said //Display the first character, and following it, keyboard.next(). This was the only incorrect part. To print the first letter of a string(in this case the string is city), use … Read more
The problem in your current code is that you’re always trying to read an int so when receiving a non-integer input you can’t handle the error in the right way. Modify this to always read a String and convert it into an int: int numberOfPeople = 0; while (numberOfPeople <= 0) { try { System.out.print(“Enter … Read more
If I understand correctly your Scanner is breaking on spaces. You want it to break on new lines: Scanner scanner = new Scanner(System.in); scanner.useDelimiter(System.getProperty(“line.separator”)); // this scans for lines while (scanner.hasNext()) { String input = scanner.next(); System.out.println(input); // take a look for yourself } 4 solved I have an issue using tokens, scanning multiple inputs … Read more
Problem resolved! I had problems with encoding of input file. And i had to add fileWriter.flush(); fileWriter.close(); solved java Scanner.hasNext always false
Tom, The problem is that one string is longer than the other one. import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String elso = sc.nextLine(); String masodik = sc.nextLine(); String longestString = elso; String shortestString = masodik; if (shortestString.length() > longestString.length()){ shortestString = elso; longestString = … Read more
From what I gather, you’re trying to get input from a user until that user types -1. If thats the case, please see my function below. public static void main (String[] args) { // Scanner is used for I/O Scanner input = new Scanner(System.in); // Prompt user to enter text System.out.println(“Enter something “); // Get … Read more
In my opinion, you forget to press “Enter” after entering input. A scanner can read the input if only you press the “Enter” key. Your solution seems correct to me. I was able to properly run it on my PC. You can find a similar question here: How to use Scanner to accept only valid … Read more