Checking if a file contains number that the user has entered (java)
49
What is a NullPointerException, and how do I fix it?
67473
How to determine if a string is a number with C++?
134748
Determine whether an array contains a value
67428
How do I determine whether an array contains a particular value in Java?
26842
Function to check if input string is an integer or floating point number?
137247
How can I check if the filename of a LaTeX document contains a string?
118004
How to use Scanner to accept only valid int as input
10074
In C# check that filename is *possibly* valid (not that it exists)
150196
C++ to check if user input is a number, not a character or a symbol
31020
Count and limit the number of files uploaded (HTML file input)
39834
Check whether files in a file list exist in a certain directory
86666
Edit file based on existence of a string
54502
Check if file is already open
1151
How to use java.util.Scanner to correctly read user input from System.in and act on it?
83418
How do I get what's inbetween " " in a user inputted String? Java
153472
Why can't I find max number in a file like this?
114378
How to check if the string is empty?