java.util.scanner

I'm writing a program which allows the user to input his data then outputs it. Its 3/4 correct but when it arrives at outputting the address it only prints a word lets say only 'Archbishop' from 'Archbishop Street'. How do I fix this? import java.util.*; class MyStudentDetails{ public static void main (String args[]){ Scanner s = new Scanner(System.in); System.out.println("Enter Your Name: "); String name = s.next(); System.out.println("Enter Your Age: "); int age = s.nextInt(); System.out.println("Enter Your E-mail: "); String email = s.next(); System.out.println("Enter Your Address: ");

Question How is it that for a scanner object the hasNextLine() method returns true while the hasNext() method returns false? Note: Based on the input file, the hasNext() method is returning the result as expected; the hasNextLine() does not seem to be returning the correct result. Code Here's the code I'm running that's creating the results below: public void ScannerTest(Reader fileReaderObject){ Scanner scannerObj = new Scanner(fileReaderObject); for(int i = 1; scannerObj.hasNext(); i++){ System.out.println(i + ": " + scannerObj.next()); System.out.println("Has next line: " + scannerObj

How do you set the delimiter for a scanner to either ; or new line? I tried: Scanner.useDelimiter(Pattern.compile("(\n)|;")); But it doesn't work. Powerlord As a general rule, in patterns, you need to double the \ . So, try Scanner.useDelimiter(Pattern.compile("(\\n)|;"));` or Scanner.useDelimiter(Pattern.compile("[\\n;]"));` Edit : If \r\n is the problem, you might want to try this: Scanner.useDelimiter(Pattern.compile("[\\r\\n;]+")); which matches one or more of \r , \n , and ; . Note : I haven't tried these. As you've discovered, you needed to look for DOS/network style \r\n (CRLF) line

I am expecting input with the scanner until there is nothing (i.e. when user enters a blank line). How do I achieve this? I tried: while (scanner.hasNext()) { // process input } But that will get me stuck in the loop Here's a way: Scanner keyboard = new Scanner(System.in); String line = null; while(!(line = keyboard.nextLine()).isEmpty()) { String[] values = line.split("\\s+"); System.out.print("entered: " + Arrays.toString(values) + "\n"); } System.out.print("Bye!"); From http://www.java-made-easy.com/java-scanner-help.html : Q: What happens if I scan a blank line with Java's Scanner? A: It

While using scanner like following: Scanner s = new Scanner(System.in); String response = s.next(); Boolean approved = (response.contains("Y") || response.contains("y")) ? true : false; if (approved){ Do Stuff } s.close(); I'm getting no such Element exception exception: Exception in thread "main" java.util.NoSuchElementException at java.util.Scanner.throwFor(Unknown Source) at java.util.Scanner.next(Unknown Source)**** I'm calling s (Scanner) multiple times, the runtime error occur on the second call. This is due to closing the scanner and than probably using it again. My question is, I'm

I often use the Scanner class to read files because it is so convenient. String inputFileName; Scanner fileScanner; inputFileName = "input.txt"; fileScanner = new Scanner (new File(inputFileName)); My question is, does the above statement load the entire file into memory at once? Or do subsequent calls on the fileScanner like fileScanner.nextLine(); read from the file (i.e. from external storage and not from memory)? I ask because I am concerned about what might happen if the file is too huge to be read into memory all at once. Thanks. Edwin Dalorzo If you read the source code you can answer