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I'm trying to set a integer datatype value on label (data type string).
I used "setText" method nut it display an error.
label.setText(String.valueOf(intValue));
label.setText(Integer.toString(intValue));
Not only for integers , String class have valueOf methods for almost all data types
String.valueOf(int);
Ex
label.setText(String.valueOf(5)); //example 5.Place your integer.
Reference : Check Oracle docs on Converting Strings to Numbers
label.setText(intValue+"");
Will do the trick.
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i have a json object and want to convert it to an int, but i get different numbers. On the first get the output is 1665750692735 (the right One), but on the getInt the output -696618113. Why?
Ok its because its an long. But how i get the long from the JSON Object?
JSON;
{"date":1665750692735,"name":"testDateTwo"}
Method:
public void add(JsonObject date) {
System.out.println((date.get("date")));
System.out.println((date.getInt("date")));
}
because the maximum value of an int is 2147483647,When long converts int, a data overflow occurs
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I want to detect the file structure in a string.
e.g
if I have a string as /name/test/testme/2 I should be able to store it in a arraylist as different elements like {[name],[test],[testme],[2]}
String[] elements = "/name/test/testme/2".split("/");
More info can be found in the String.split() Javadoc
As Lukas pointed out, (please give him some upvoting) you should use the split method.
String[] elements = "/name/test/testme/2".split("/");
The regular expressions are not used to split strings in sections. Regular expressions are used for matching the target string with a specific generic format. In this case a boolean value indicating if the strings match is returned.
Hope I helped!
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I think this is not hard in C with pointers. However, how would one do this in java? EG a float is represented as 101001, and you want the integer represented by 101001 (obviously shortened since they're really 32 bits)? Just curious.
I think you want Float.floatToIntBits().
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Is it possible to assign information to an element in an array in java?
For example, can I have an element containing a title and a number etc?
How do you go about this? thanks
Yes, instead of having an array of primitive types (like ints) or Strings, define your own class and then create an array of that. Then you can have whatever information you want in there.
Alternatively, if the array must be an array of primitives or Strings because some other method requires it to be in that form, you could either create a second array like that on demand, or use a second array for the associated data (again you might create your own class for this).
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I am receiving following sting in properties from IBM MQ as message Id, I want to convert it back to original value in string or integer. Please help me do that.
JMSMessageID=ID:c1d4d840d8e4c16dd4d8404040404040520b91682005a90d
What you see after JMSMessageID=ID i.e. c1d4d840d8e4c16dd4d8404040404040520b91682005a90d is the real (or original) message id. It is 24 byte long. You can't convert that into an integer.