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Scanners, Strings and doubles... Help!

 
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Hi

So new to the whole Java shindig thats going on over here, I am 1 month down in my 4 year software engineering degree, And I am already stumped on how to pull doubles from a string using a Scanner. The code is a mess, and I'm sure it doesn't make much scene but working on one problem at a time,



Any point in the right direction would be amazing!

Cheers!

Cj
 
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Welcome to the Ranch
Try something like thisNice and short, does one thing, shows you the Scanner working, and allows you to alter your code without messing up your bigger class.
 
Cj Turner
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Thanks for the speedy reply, I since posting this have worked out my initial problem, and have moved onto others... This is my code as it stands,




Now the issue with this is, where I have

The second if statement returns the current value, while the first always returns 0,

I'm sure the tempNum is assigned a value before it reaches the if, so it should have something greater than 0 to store there?
 
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Cj Turner wrote:Thanks for the speedy reply, I since posting this have worked out my initial problem, and have moved onto others... This is my code as it stands,




Now the issue with this is, where I have

The second if statement returns the current value, while the first always returns 0,

I'm sure the tempNum is assigned a value before it reaches the if, so it should have something greater than 0 to store there?




hi,

I think the only issue is with if block.

Try below code instead of your if blocks:



Hope you will get proper answer.

Thanks
James
 
Campbell Ritchie
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Where are you initialising tempNum? Why are you using two Scanners? You only need one. Don't use nextLine() if you want a number, use nextXXX(). Don't pass the result from one Scanner to another, which is unnecessary.
You can enter several doubles and read them in a loop, like this

Enter your numbers: 1.23 2.34 3.45
Enter more numbers, or "close" to finish: 4.56 5.67 close

 
Don't get me started about those stupid light bulbs.
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