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A KeyValuePair in Java [duplicate]
I'm looking for a KeyValuePair class in Java.
Since java.util heavily uses interfaces there is no concrete implementation provided, only the Map.Entry interface.
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What is the equivalent of the C++ Pair in Java?
Is there a good reason why there is no Pair<L,R> in Java? What would be the equivalent of this C++ construct? I would rather avoid reimplementing my own.
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java.lang.OutOfMemoryError: bitmap size exceeds VM budget - Android
...e of the most common errors that I found developing Android Apps is the “java.lang.OutOfMemoryError: Bitmap Size Exceeds VM Budget” error. I found this error frequently on activities using lots of bitmaps after changing orientation: the Activity is destroyed, created again and the layouts are ...
How do you get the “object reference” of an object in java when toString() and hashCode() have been
I would like to print the "object reference" of an object in Java for debugging purposes.
I.e. to make sure that the object is the same (or different) depending on the situation.
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Java reflection - impact of setAccessible(true)
...lue of true indicates that the reflected object should suppress checks for Java language access control when it is used
And a runnable example:
public class FieldAccessible {
public static class MyClass {
private String theField;
}
public static void main(String[] args) throw...
What does java.lang.Thread.interrupt() do?
Could you explain what java.lang.Thread.interrupt() does when invoked?
9 Answers
9
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java.lang.IllegalArgumentException: View not attached to window manager
...licitly via AsyncTask.cancel()) closing it via .cancel().
Got the same "java.lang.IllegalArgumentException: View not attached to window manager" error when I was killing the dialog in the onCancelled() method of the AsyncTask (I'd seen this done in the excellent Shelves app).
The workaround wa...
Java: function for arrays like PHP's join()?
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Starting from Java8 it is possible to use String.join().
String.join(", ", new String[]{"Hello", "World", "!"})
Generates:
Hello, World, !
Otherwise, Apache Commons Lang has a StringUtils class which has a join function which will jo...
Null check in an enhanced for loop
What is the best way to guard against null in a for loop in Java?
11 Answers
11
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IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath
...I removed my old JSDK and added it again, but it does not work. I am using Java 2016.3
– mtber75
Dec 1 '16 at 14:09
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