The scanner can also use delimiters other than whitespace. Easy example from Scanner API: String input = “1 fish 2 fish red fish blue fish”; // \\s* means 0 or more repetitions of any whitespace character // fish is the pattern to find Scanner s = new Scanner(input).useDelimiter(“\\s*fish\\s*”); System.out.println(s.nextInt()); // prints: 1 System.out.println(s.nextInt()); // prints: 2 … Read more
Alright, let’s elaborate with some simplified explanation about the Scanner class. It is a standard Oracle class which you can use by calling the import java.util.Scanner. So let’s make a basic example of the class: class Scanner { InputStream source; Scanner(InputStream src) { this.source = src; } int nextInt() { int nextInteger; //Scans the next token of the … Read more
This has really puzzled me for a while but this is what I found in the end. When you call, sc.close() in first method, it not only closes your scanner but closes your System.in input stream as well. You can verify it by printing its status at very top of the second method as : … Read more
Reading a .txt file using Scanner class in Java
Using a do-while loop to check a User’s input in Java
