Programming Forums > Application Development > Java

sharadpro · May 25th, 2006, 8:53 AM

how can the input buffer be flushed ??
wats the function and its syntax?
thank you!!

class MenuD
{
 public static void main(String args[])
throws java.io.IOException
 {
   char choice;
   do
  {
      System.out.println("Menu :");
      System.out.println("1.Hello");
      System.out.println("2.Abc");
      System.out.println("3.Exit");
      System.out.println("Enter choice");
      choice = (char) System.in.read();
     
      switch(choice)
      {
             case '1':
                    System.out.println("Hello");
                    break;
            case '2':
                    System.out.println("Abc");
                    break; 
            case '3' :
                    System.out.println("Exiting.....");
                    break;
    }
   } while(choice!='3');
  }
 }

i want to flush the buffer after the value of choice is entered!!

Eric the Red · May 25th, 2006, 9:12 AM

What code do you have so far?

NSchnarr · May 25th, 2006, 9:59 AM

I know you could use the scanner class, thats what i usually use when dealing with i/o. Not sure if this would help but you could try.

(Toggle Plain Text)

InputStream in = new InputStream();
System.setIn(in);

this is supposed to set a new input stream, and therefore, not use the old one. Just use the scanner class tho.

titaniumdecoy · May 25th, 2006, 6:10 PM

You could use a BufferedReader:

(Toggle Plain Text)

BufferedReader in = new BufferedReader(
                    new InputStreamReader(System.in));

May 25th, 2006, 8:53 AM	#1
sharadpro Newbie Join Date: Feb 2006 Location: India Posts: 25 Rep Power: 0	flushing input buffer how can the input buffer be flushed ?? wats the function and its syntax? thank you!! (Toggle Plain Text) class MenuD { public static void main(String args[]) throws java.io.IOException { char choice; do { System.out.println("Menu :"); System.out.println("1.Hello"); System.out.println("2.Abc"); System.out.println("3.Exit"); System.out.println("Enter choice"); choice = (char) System.in.read(); switch(choice) { case '1': System.out.println("Hello"); break; case '2': System.out.println("Abc"); break; case '3' : System.out.println("Exiting....."); break; } } while(choice!='3'); } } class MenuD { public static void main(String args[]) throws java.io.IOException { char choice; do { System.out.println("Menu :"); System.out.println("1.Hello"); System.out.println("2.Abc"); System.out.println("3.Exit"); System.out.println("Enter choice"); choice = (char) System.in.read(); switch(choice) { case '1': System.out.println("Hello"); break; case '2': System.out.println("Abc"); break; case '3' : System.out.println("Exiting....."); break; } } while(choice!='3'); } } i want to flush the buffer after the value of choice is entered!! Last edited by sharadpro; May 25th, 2006 at 9:18 AM.

May 25th, 2006, 9:12 AM	#2
Eric the Red Hobbyist Programmer Join Date: Feb 2006 Posts: 214 Rep Power: 0	What code do you have so far? __________________ Death smiles at us all. All a man can do is smile back.

May 25th, 2006, 9:59 AM	#3
NSchnarr Newbie Join Date: May 2006 Posts: 28 Rep Power: 0	I know you could use the scanner class, thats what i usually use when dealing with i/o. Not sure if this would help but you could try. (Toggle Plain Text) InputStream in = new InputStream(); System.setIn(in); InputStream in = new InputStream(); System.setIn(in); this is supposed to set a new input stream, and therefore, not use the old one. Just use the scanner class tho.

May 25th, 2006, 6:10 PM	#4
titaniumdecoy Expert Programmer Join Date: Nov 2005 Posts: 904 Rep Power: 3	You could use a BufferedReader: (Toggle Plain Text) BufferedReader in = new BufferedReader( new InputStreamReader(System.in)); BufferedReader in = new BufferedReader( new InputStreamReader(System.in));

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Programming Forums > Application Development > Java

flushing input buffer