Assume we want to validate user input, while user is typing in a JTextField. For validating the user input, I wonder if I could use Ragel.
Assume the input should follow this ... |
I've got four variables and I want to check if any one of them is null. I can do
if (null == a || null == b || null == c || ...
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Hi what is the best way to validate a nested string in java?
sample valid string is [aaaa{bbb}]
while [{ss]} is not.
Thanks!
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I have a string;
String allIn = "(50 > 100) AND (85< 100)";
Now I need to evaluate if the conditions inside are TRUE or FALSE, how can I do it?
In real the ... |
How can a string be validated in Java? I.e. only characters are allowed and not numbers? How about email validation?
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I have a question about validation in Java, I have looked at previous topic and none seem to answer my little problem.
What I am trying to do is validate what is ... |
I'm trying to make a polynomial operator (sum, rest, multiplication and division of two or more polynomials). The code must be in Java and using linked lists.
I was wondering how do ... |
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I'm building an AJAX enabled web application in which I'm accepting to inputs from user or sometimes building query string based on user action.
Using firebug or other tools anyone can ... |
hi I want to validate the data types in the java code .
How should I go about it? The data types include String buffer,int , String etc.It would be nice if ... |
Every method accepts a set of parameter values. Should we always validate the non-nullness of input parameters or allow the code to fail with classic RunTimeException?
I have seen a lot of ... |
I'd like to validate whether Strings passed to methods are deprecated or not. e.g.:
public class MyRepo
@Deprecated
private static final String OLD_PATH = "old_path";
...
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I am trying to validate a string which can contain some conditions and logical operators.
For example,
My input expression could be something like this:
(var1==var2 AND var2==var4) OR (someothervar!=5) AND (somemorevar=<4 OR var5<10)
Later, ... |
static Product createProduct() {
Scanner sc = new Scanner(System.in);
System.out.println("\nEnter new product ");
...
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I am having difficultie while validating a long variable if it is null.
The Code which I am using is :
long late_in= latein_hours.getTime();
It will show an error that java null pointer exception. ... |
This is a question more about best practices/design patterns than regexps.
In short I have 3 values: from, to and the value I want to change. From has to match one of ... |
i have a program that simply takes all the states as a set of states as a input.
and then the next input that is taken is the initial state among the ... |
Thanks for taking the time to look at my question.
I am working on a Java tuturial for college which I need some help with.
one of the requirements is to enter details ... |
I need to test whether the string given as input is a not a whole number or contains at least five English alphabets.I know how to implement it using the loops.But ... |
In Java I want to validate a account number for a bank which will be the input be the use.It should have the following fomat: 1)It should start with SB 2)After ... |
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Hi All, Can anybody please help me out. I have a text field i need to validate that text field with the following condtions using strings. 1. It should accept year (eg : 2006) 2. It should accept month (eg : 09/2006) 3. It should accept date (eg : 11/09/2006) 4. It should accept range (eg: 2006-2009) 5. Months (eg: 15 ... |
Hi: I hope someone has come up with an elegant method that solves my problem, and is willing to share. My application is based on the Chapter 6 sample in Wrox "Professional JSP 2nd Ed."): 1. Controller looks up and calls an event handler's process() method. 2. The event handler populates one or more beans using JDBC/mySQL and stuffs them in ... |
Hello all, In my code I have declared a String name; An I am doing following validations.. if(name == null) {doSomething; } else if(name != null){do Somethign;} What I have observed is when I write if(name != null)condiiton before if(name == null)condiiton, when the name is not null the if(name != null) condiiton is ignored. but if works fine as mentioned ... |
Originally posted by Carol Enderlin: Sounds like we're doing your assignment if WE think of them instead of YOU thinking of them. Hey Carol, this is a free world. You have the freedom to express or hold your opinions. I simply posted on the forum to get more ideas from others because I have a few ideas already and ... |
Hi, I am looking to validate the html tags contained within a string object. Is there any validator/library available so I can just send the string and get a message if the tags are not valid. I have looked at w3cs html validator, but I needed to do something from within my code. Any suggestions. Pls. help! Thanks, Sujatha |
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I have 25 input boxes of which are grouped into 5 "messages", each containing 5 lines. Any suggestions or tips on efficiently validating these text boxes? For example, Messages #2-5 cannot have any values unless Message #1 has values. Also, for a given message, a line can only have values if all the lines before it have values (for example, a ... |
Hi all, first off, I will try to demonstrate what I would like to achieve, since I think it will be much better than describing it. Consider the following interface: public interface InputValidator { boolean isValid(String input); } Next, consider the following line of code public void setSomething(@Validate String data) { // note the @Validate this.data = data; } What I ... |
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Greeting to all, I have a doubt, My motive is to create a method that will check a string for null, isEmpty and also for maxLength, this should be done with a single method, if anything is wrong, it should throw a runtime exception. I have done this for checking for null and empty, public static void validate(String value, String context){ ... |
Hello, in my program I am trying to validate if a password is correct. However I am coming up with the problem of the code saying the password is incorrect even when it is correct. it looks as it is not comparing the newly inputted password but it is using the one declared in the driver. Any ideas? The two strings ... |
Hey guys, I am following the project requirements for our first java project at school. One of the requirements is to validate it so that STATE cannot be blank and must have no more than two letters (like CA for california) I know how to validate for making sure the field is not blank but how about validating to make sure ... |
public boolean validateRegNumber(String testString) { // sample regNumber E35/0847/05 String validFirstChar = "IZECB"; String validNum = "0123456789/"; while (testString.length() > 11 || testString.length() <= 0){ return false; } char c=testString.charAt(0); //first character must be alphabetic if (validFirstChar.indexOf(c)== -1) return false; for (int i=testString.charAt(3); i |
So basically there is no specific way to do this. Depends on the controls you are using and the design, we can take different approaches. However, if we consider web applications we are more towards to do the validations on client-side and try to avoid overheads on servers. When comes to the desktop application anyway life is more easy. |
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Sorry! The default value of both String A and String B are contain 8 symbol * and separate by symbol , I want to check if the first * in String A be replace by a the input value then the first start in String B , also need to have an input value. so as the second, third ...* Thank ... |
Hey guys, I am following the project requirements for our first java project at school. One of the requirements is to validate it so that STATE cannot be blank and must have no more than two letters (like CA for california) I know how to validate for making sure the field is not blank but how about validating to make sure ... |
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Hey guys, My first post here woo! =P Well at the moment I'm designing a database for a uni project and i was just wondering if anyone knows how to check if something which has been inputted meets a certain criteria (ie. If someone enters a date.. I should be in the format dd/mm/yyyy or if an email is a valid ... |
I have got a string called 'input' and a float called 'output'. The string entered will hopefully be in the format of 12.12, but it could be anything. I want it to be in the format of 12.12 so I want to be able to check the string to see if it is in the format of '11.11' where the '1's ... |
I have the folowing strings in a program i have created. This is to be put into a command line application String Name; String HousNum; String Street; String Town; String Postcode; Anyone know how to validate strings so for example for the string name you can only have letters allowed and it has to be at least one character |