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How to check if a string starts with a specified string?
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How do I convert a String to an int in Java?
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How do I verify that a string only contains letters, numbers, underscores and dashes?
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How do you use: isalnum, isdigit, isupper to test each character of a string?
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How do I check if a string contains another string in Objective-C?
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Check a string to see if all characters are hexadecimal values
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contains method of String is not working properly
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How can I check if a single character appears in a string?
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How to extract numbers from a string and get an array of ints?
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Check if a string contains a string in C++
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How do I get what's inbetween " " in a user inputted String? Java
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How do I check if a string is a number (float)?
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Why does my string comparison fail?
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Checking if an input number is an integer
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Why does my if condition not accept an integer in java?