Code:
String stringInput = " ";
stringInput = dinnerTextField.getText();
Jerick
Last Activity: Mar 5 '12, 09:58 PM
Joined: Feb 21 '12
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Jerick started a topic How can I convert a JTextField that's returning null to a different string value?in JavaHow can I convert a JTextField that's returning null to a different string value?
I have a JTextField that I'm not always passing a value to, but it causes an exception to be thrown when the program runs if the person hasn't entered anything into the JTextField. I have some code below that I'm trying to convert a null response into a different String value. Why isn't it assigning stringInput as a String of "0"?
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How can I make a float throw an exception, when entered?
I have a GUI that I use as a calculator. When I enter in anything other than numbers, it throws a NumberFormatExc eption, as intended. But when I enter in a number such as "23423f" the program seems to think I'm entering a float and doesn't throw an exception, because of the f at the end, even though all other letters throw an exception.
Currently, all I'm doing is putting the input section into a try catch block, where I parse... -
Ok, that works. I see what the problem was now. Thanks a lot. -
That looks like it would use the correct System.out.prin t() messages. But the problem is that I've been required to use IllegalArgument Exception.Leave a comment:
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I put the -1 there so that if the value doesn't get changed, then that means it didn't get parsed into an int, which means it's a string. If it doesn't go through the for-loop, then the value still isn't changed and it throws the exception.Leave a comment:
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Yup... I added an if else statement to the code I just posted which is why numbers between 1 to 12 aren't working anymore. Simply moving the for-loop into the catch doesn't change anything.
Did YOU read my first post? I explained all of this. Read the 2nd paragraph in my first post, please.Leave a comment:
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In the code I posted, a string like "December" just skips over the empty catch block and goes to the for-loop.
But here's some code where I entered the for-loop into the catch block. Strings like "December" are working, but if I enter in a number outside of 1 to 12, it passes the 1st IllegalArgument Exception and goes to the 2nd one and gives the wrong System.out.prin t()
...Code:public void setMonthName(String
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With the code I posted, strings such as "January" or "Saturday" were being hanlded correctly, but numbers outside of 1 to 12 were being sent down to the 2nd IllegalArgument Exception instead of the 1st one and giving the wrong System.out.prin t() message.
If I add a throw new IllegalArgument Exception to the catch block, then numbers outside of 1 to 12 get handled correctly, but strings such as "January" or...Leave a comment:
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Wrong exception being thrown
I'm trying to account for any value outside of 1 to 12 or a name of a month. I'm passing in a string to this method. I then try to parse it into an int and do an if statement to see if it's between 1 and 12. If it's not an int then it goes down and a for-loop checks to see if it's a name of a month.
The problem is that if I add a throw new IllegalArgument Exception to the catch block and pass in "Saturday" it throws the Illegal...
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