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SparseArray vs HashMap
...ted on heap by JVM.
They may vary depending on the specific JVM used.
The java.lang.instrument package contains some helpful methods for advanced operations like checking the size of an object with getObjectSize(Object objectToSize).
Extra info is available from the official Oracle documentation....
How should I copy Strings in Java?
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How to obtain the last path segment of a URI
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I was searching for Android's android.net.Uri (not java.net.URI) and ended up here. If you're using that instead, there's a method there called getLastPathSegment() which should do the same thing. :)
– pm_labs
Mar 4 '13 at 4:19
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Gson - convert from Json to a typed ArrayList
...t;(){}.getType());
Documentation:
Represents a generic type T.
Java doesn't yet provide a way to represent generic types, so this class does. Forces clients to create a subclass of this class which enables retrieval the type information even at runtime.
For example, to create a type...
Implements vs extends: When to use? What's the difference?
...ce would be an abstract class (not EXACTLY the same but pretty much).
Also java doesn't support multiple inheritance for classes. This is solved by using multiple interfaces.
public interface ExampleInterface {
public void doAction();
public String doThis(int number);
}
public class sub ...
JPQL IN clause: Java-Arrays (or Lists, Sets…)?
...', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f2772305%2fjpql-in-clause-java-arrays-or-lists-sets%23new-answer', 'question_page');
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How do you format the day of the month to say “11th”, “21st” or “23rd” (ordinal indicator)?
... in English. So, I suggest that if there's really no good solution in the Java world that is internationalization friendly that we start a project on, e.g., GitHub and create a good solution. Let me know if you're interested.
– Greg Mattes
Apr 7 '18 at 13:56
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How to obtain Signing certificate fingerprint (SHA1) for OAuth 2.0 on Android?
... copy Key Store Path.
Now open a command prompt and go to C:\Program
Files\Java\jdk1.6.0_39\bin> (or any installed jdk version).
Type keytool -list -v -keystore and then paste your Key Store
Path (Eg. C:\Program Files\Java\jdk1.6.0_39\bin>keytool -list -v
-keystore "E:\My Projects \A...
What are the use(s) for tags in Go?
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Kind of like Java annotations?
– Ismail Badawi
Jun 2 '12 at 1:57
8
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Counting inversions in an array
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So here is O(n log n) solution in java.
long merge(int[] arr, int[] left, int[] right) {
int i = 0, j = 0, count = 0;
while (i < left.length || j < right.length) {
if (i == left.length) {
arr[i+j] = right[j];
j+...