大约有 7,481 项符合查询结果（耗时：0.0204秒） [XML]
java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
I'm using the support library for my app. In my FragmentActivity I'm using an AsyncTask for downloading data from internet. In the onPreExecute() method I add a Fragment and in the onPostExecute() method I remove it again. When the orientation is changed in between, I get the above mentioned excepti...
How to check if a String contains another String in a case insensitive manner in Java?
...
Yes, contains is case sensitive. You can use java.util.regex.Pattern with the CASE_INSENSITIVE flag for case insensitive matching:
Pattern.compile(Pattern.quote(wantedStr), Pattern.CASE_INSENSITIVE).matcher(source).find();
EDIT: If s2 contains regex special character...
How to convert a char array back to a string?
...t this is a very unusual situation: Because String is handled specially in Java, even "foo" is actually a String. So the need for splitting a String into individual chars and join them back is not required in normal code.
Compare this to C/C++ where "foo" you have a bundle of chars terminated by a ...
Junit: splitting integration test and Unit tests
... <configuration>
<excludedGroups>java.io.Serializable</excludedGroups> <!-- An empty element doesn't overwrite, so I'm using an interface here which no one will ever use -->
</configuration>
</plugin&g...
Using Mockito's generic “any()” method
...
Since Java 8 you can use the argument-less any method and the type argument will get inferred by the compiler:
verify(bar).doStuff(any());
Explanation
The new thing in Java 8 is that the target type of an expression will be u...
How set the android:gravity to TextView from Java side in Android
I can use android:gravity="bottom|center_horizontal" in xml on a textview to get my desired results, but I need to do this programmatically. My textview is inside a tablerow if that matters in a relativelayout .
...
How to upgrade Eclipse for Java EE Developers?
...2f%2fstackoverflow.com%2fquestions%2f17337526%2fhow-to-upgrade-eclipse-for-java-ee-developers%23new-answer', 'question_page');
}
);
Post as a guest
Name
...
Java: Difference between the setPreferredSize() and setSize() methods in components
...
Content panes use BorderLayout by default (java.sun.com/docs/books/tutorial/uiswing/layout/using.html). So the JFrame's contentpane has a LayoutManager, so setPreferredSize should work ..
– miku
Nov 23 '09 at 15:36
...
GSON - Date format
...()
.setDateFormat("EEE, dd MMM yyyy HH:mm:ss zzz").create();
or using java.text.DateFormat
Gson gson = new GsonBuilder()
.setDateFormat(DateFormat.FULL, DateFormat.FULL).create();
or do it with serializers:
I believe that formatters cannot produce timestamps, but this serializer/deserial...
Comparing strings by their alphabetical order
...hen "Sunject" as "P" comes before "S").
Does anyone know how to do that in Java?
7 Answers
...