I need to develop a validation pattern for catching any kind from: pdf/csv/xlsx select any separate word is simple: (pdf|csv|xlsx). However, I need to check that any combination with them separated by slash is fine as well. For example, correct flow: Incorrect: Answer You may use this regex: RegEx Demo
Tag: string
Check if string contains number after specific word [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 months ago. Improve this question can someone help me with string validation? I tried to find the solution, but none was satisfied. I have the
Get all possible matches in a regex match (In Java)?
I am using a regex to match few possible values in a string that coming with my objects, there I need to get all possible values that are matching from my string as below, If my string value is “This is the code ABC : xyz use for something”. Here is my code that I am using to extract matchers,
how to count the number of words in each line in Java?
My task is to count the number of words on each line of a text file, separated by space. The text file has 5 lines. I am very new to Java. I have so far this code with the B1TextLoader class and several methods. My output is: however, I want it to print something like How can I achieve this?
how can I use backslash to backreference regex groups in java replaceAll()
for example: this Java code will switch the place of ‘1’ and ’14’. but The form that i want is below, unfortunately Java not supported this form Is there any other tool can support this form? Answer You can’t do that. And although it is not processed as back references by the regex engine it is first a feature of
Why is this input an invalid format for Joda-Time PeriodFormatter?
I am trying to convert strings like 1h 30m 5s or 5m or 38s or 1h 3s into an integer value representing total time in seconds. So for example, 1m 20s would result in an integer value of 80 for 80 seconds. I am using Joda Time: Throws an IllegalArgumentException with practically every string i pass in, saying “Invalid format”.
How to disable date auto update/correct/adjust in Java?
Im trying to check the format of the Date. Implementation: Get Date format yyyy-MM-dd then if i input beyond month 12 and day 30 or 31 depend on the month it must show error. The pattern will work if I manually setup a date in String, but the date must come from Date to String but the Date will auto
java – Set final fields with reflection in Constructor
I’m trying to make a multi-language app with messages inside multiple *.properties files. I’ve started working on something like this: Now, there’s a lot of messages, and I don’t feel like typing the same thing each time (plus there could me typos which could be an issue…). The first solution I thought of was to loop through all of the
How to count count the number of names Java
Hi guys. I’m new to Java, currently learning Strings. I have a task to count the number of names, the length of the name must be at least two, the first letter of the name should start with upper case, the second with lower case. The issue is that I don’t know how to use the Character.isUpperCase(text.charAt(i)) and Character.isLowerCase(text.charAt(i +
Find the first Recurring letter in Java
I wrote the code as follows but it doesn’t return the first recurring letter properly. Example: In the word “statistics” the recurring letters are s, t, and i. But the letter t recurs sooner than the letter s and i, but my program returns s instead of t. What do I need to do for it to return t, using