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Convert string to nullable type (int, double, etc…)
...tempting to do some data conversion. Unfortunately, much of the data is in strings, where it should be int's or double, etc...
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How to convert an int array to String with toString method in Java [duplicate]
I am using trying to use the toString(int[]) method, but I think I am doing it wrong:
8 Answers
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Compare two objects in Java with possible null values
I want to compare two strings for equality when either or both can be null .
12 Answers
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How to determine MIME type of file in android?
...this:
// url = file path or whatever suitable URL you want.
public static String getMimeType(String url) {
String type = null;
String extension = MimeTypeMap.getFileExtensionFromUrl(url);
if (extension != null) {
type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extensi...
Java equivalent to Explode and Implode(PHP) [closed]
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The Javadoc for String reveals that String.split() is what you're looking for in regard to explode.
Java does not include a "implode" of "join" equivalent. Rather than including a giant external dependency for a simple function as the other...
What is the difference between substr and substring?
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The difference is in the second argument. The second argument to substring is the index to stop at (but not include), but the second argument to substr is the maximum length to return.
Links?
https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/substr
https://develop...
Remove substring from the string
I am just wondering if there is any method to remove string from another string?
Something like this:
10 Answers
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Is there a better way to dynamically build an SQL WHERE clause than by using 1=1 at its beginning?
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Save the conditions in a list:
List<string> conditions = new List<string>();
if (condition1) conditions.Add("Col1=0");
//...
if (conditions.Any())
Query += " WHERE " + string.Join(" AND ", conditions.ToArray());
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Value of type 'T' cannot be converted to
...ven though it's inside of an if block, the compiler doesn't know that T is string.
Therefore, it doesn't let you cast. (For the same reason that you cannot cast DateTime to string)
You need to cast to object, (which any T can cast to), and from there to string (since object can be cast to string).
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How to split a string, but also keep the delimiters?
I have a multiline string which is delimited by a set of different delimiters:
23 Answers
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