Thread: URGENT HELP NEEDED IN AN HOUR:Printing first number in input

Write a Java program ExtractNumber.java to read the data via the keyboard, character
by character and print the first number (with or without a decimal point) contained in the
input. For example, given the input data: Mary works for $43.75 per hour, the program
should print 43.75 to the screen.



When i entered the sentence "The lady works for 8 hours at $10.00 per hour" ERROR: My output was 810.00 instead of simply the first number 8

Post the new version of the code and explain what the problem is. Post the program's output and add some comments showing what it should be.

if(Character.isDigit(character)||sentence.charAt(i )== '.')
{
if (sentence.charAt(i)== ' ') of the digit
break;
System.out.printf ("%c",sentence.charAt(i));
}

}


The program should only print the first integer or double entered.
The above is the new person.
I entered the sentence "Jane works for $450.00 an hour for 5 days"
The program prints 450.005 when it should only print 450.00 which is the first double.

Have you worked out the logic that the code needs to implement?
List the steps the code needs to take to solve the problem.
Here's a start:
ask user for input
read input into a String
loop through the String one char at a time
>>> What needs to be done here inside the loop as each character is obtained?

Ok that's one part,
then what does it do next:
if it is a digit
if it is NOT a digit

and then what after that

Is that all? That logic will print ALL of the digits in the String? That is what the current code does.

Don't you want to stop printing digits after the first non-digit is found following some digits?

stop printing if digit reaches a white space

I'm not sure what that means. Can you explain a little more?

How will the code know if a white space should stop the printing or not? There will be lots of white spaces in the String.

Describe what the code needs to have to do that.
The code needs to know if it has found a digit or not. A boolean variable can be used to remember that.