System.out.println( "This program will read, and echo some values\n" );
BufferedReader is = new BufferedReader(
new InputStreamReader( System.in ) );
String instring = null;
System.out.print( "Please enter a string\n> " );
try
{ instring = is.readLine();
}
catch( IOException ioe )
{ ioe.printStackTrace();
System.exit( -1 );
}
System.out.println( "You input: " + instring );
StringTokenizer st = null;
String item = null;
System.out.print( "\nPlease enter an integer\n> " );
int i = 0;
while( true )
{ try
{ instring = is.readLine();
st = new StringTokenizer( instring );
item = st.nextToken();
i = new Integer( item.trim() ).intValue();
break;
}
catch( IOException ioe ) // from is.readLine()
{ ioe.printStackTrace();
System.exit( -1 );
}
catch( NoSuchElementException nse ) // from st.nextToken()
{ nse.printStackTrace();
System.out.print( "\nPlease enter SOMETHING!\n> " );
}
catch( NumberFormatException nfe ) // from Integer constructor
{ nfe.printStackTrace();
System.out.print( "\nPlease input an INTEGER!\n> " );
}
} // end while( read an integer )
System.out.println( "You input : " + i );
System.out.print( "\nPlease enter a floating point value\n> " );
double d = 0.0;
while( true )
{ try
{ instring = is.readLine();
if( instring == null )
{ throw new NoSuchElementException();
}
st = new StringTokenizer( instring );
item = st.nextToken();
d = new Double( item.trim() ).doubleValue();
break;
}
catch( IOException ioe )
{ ioe.printStackTrace();
System.exit( -1 );
}
catch( NoSuchElementException nse )
{ nse.printStackTrace();
System.out.print( "\nPlease enter SOMETHING!\n> " );
}
catch( NumberFormatException nfe )
{ nfe.printStackTrace();
System.out.print( "\nPlease input a FLOAT value!\n> " );
}
finally
{ System.out.println( "*** finally ..." );
}
} // end while( mine's a double )
System.out.println( "You input : " + d );
