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When is the finalize() method called in Java?
... finalize() method is called in the JVM . I created a test class which writes into a file when the finalize() method is called by overriding it. It is not executed. Can anybody tell me the reason why it is not executing?
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How are virtual functions and vtable implemented?
... virtual table for a class irrespective of the number of virtual functions it contains. This virtual table in turn contains the base addresses of one or more virtual functions of the class. At the time when a virtual function is called on an object, the vptr of that object provides the base address ...
Check if an apt-get package is installed and then install it if it's not on Linux
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edited Aug 19 '09 at 6:39
answered Aug 19 '09 at 6:27
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Why can I change value of a constant in javascript
...o an array or object you're not re-assigning or re-declaring the constant, it's already declared and assigned, you're just adding to the "list" that the constant points to.
So this works fine:
const x = {};
x.foo = 'bar';
console.log(x); // {foo : 'bar'}
x.foo = 'bar2';
console.log(x); // {f...
How does JavaScript .prototype work?
I'm not that into dynamic programming languages but I've written my fair share of JavaScript code. I never really got my head around this prototype-based programming, does any one know how this works?
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Mocking member variables of a class using Mockito
I am a newbie to development and to unit tests in particular .
I guess my requirement is pretty simple, but I am keen to know others thoughts on this.
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How to extract text from a PDF? [closed]
...d in pre-known regions of the document, so the API will need to give us positional information of each element on the page.
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Advantages to Using Private Static Methods
...age on this:
After you mark the methods as static, the compiler will emit non-virtual call sites to these members. Emitting non-virtual call sites will prevent a check at runtime for each call that ensures that the current object pointer is non-null. This can result in a measurable performance g...
Static nested class in Java, why?
I was looking at the Java code for LinkedList and noticed that it made use of a static nested class, Entry .
14 Answers
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Does Python have “private” variables in classes?
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It's cultural. In Python, you don't write to other classes' instance or class variables. In Java, nothing prevents you from doing the same if you really want to - after all, you can always edit the source of the class itsel...