Java: Buffered Reader Input Guarding

Question

Is there a way to guard input in Java using BufferedReader , in a way similar to Scanner uses hasNextInt() ?

For example, reading in an int , and if a non-integer is entered, then using control flow to stop the program progressing until an int is entered? I picture a while loop but unsure of the conditional.

Answer 1

Hope this helps !!

 import java.io.BufferedReader;
 import java.io.InputStreamReader;
        
        public class BufferedReaderInputGuarding {
        
            public static void main(String[] args) {
                int flag = 0;
                String input = "";
                int inputInteger = 0;
                BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
                do {
        
                    System.out.print("Enter a number: ");
                    try {
                        input = br.readLine();
                        inputInteger = Integer.parseInt(input);
                        flag = 0;
                        System.out.println("Entered Number " + inputInteger);
                    } catch (NumberFormatException nfe) {
                        flag = 1;
                        System.err.println("Ony Integer allowed " + nfe.getMessage());
                    } catch (Exception e) {
                        flag = 0;
                        System.err.println("Exception occured " + e.getMessage());
                    }
        
                } while (flag == 1);
            }
        
        }