Solved

public static double parseDouble(String s)

Posted on 2004-04-01
4
1,179 Views
Last Modified: 2012-06-21
For the following method, what does this return when empty string passed?

public static double parseDouble(String s)
                       
0
Comment
Question by:dkim18
  • 2
  • 2
4 Comments
 
LVL 24

Accepted Solution

by:
sciuriware earned 50 total points
ID: 10739021
It won't return, but throw a NumberFormatException.
;JOOP!
0
 
LVL 24

Expert Comment

by:sciuriware
ID: 10739029
You can easily test this:


public class Program
{
   public static void main(String[] argv)
   {
      double answer = Double.parseDouble("");
      System.out.println("It produced:" + answer);
   }
}
0
 
LVL 30

Expert Comment

by:Mayank S
ID: 10739098
Just put the parseDouble () call in a try block and put a catch block for the NumberFormatException.
0
 
LVL 30

Expert Comment

by:Mayank S
ID: 10739104
try
{
  double d = Double.parseDouble ( "anything" ) ;

}

catch ( NumberFormatException e )
{
  // if it enters here - the format was incorrect
}
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
servlet requestdispatcher include and forward differences 1 39
fibonacci ten numbers 4 46
by zero exception 10 54
What browser will run Java? 7 73
Java Flight Recorder and Java Mission Control together create a complete tool chain to continuously collect low level and detailed runtime information enabling after-the-fact incident analysis. Java Flight Recorder is a profiling and event collectio…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
Viewers will learn about if statements in Java and their use The if statement: The condition required to create an if statement: Variations of if statements: An example using if statements:
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:

808 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question