I am reading my values from a db which is supposed to be a string, but sometime

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Question: I am reading my values from a db which is supposed to be a string, but sometime they can be doubles or something else...
How could I check if a string was double?

Answer: You can try to try to parse the String into a double and catch the exception:

String mystr="1.6";
try {
Double dbl = new Double(s);
// do smth. here}
catch (NumberFormatException ex) {
// d smth. else here
}

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