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What is the difference between Spring, Struts, Hibernate, JavaServer Faces, Tapestry?
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Hibernate is an object-relational mapping tool, a persistence framework.
JavaServer Faces is component-based presentation framework.
JavaServer Pages is a view technology used by all mentioned presentation framework for the view.
Tapestry is another component-based presentation framework.
So, to...
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...
Can “this” ever be null in Java?
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I don't know deeply about Java, but in C++ the this of an instance method could be NULL. So I am not quite convinced this is a sufficient reason in Java.
– kennytm
Sep 24 '10 at 17:32
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How does the “final” keyword in Java work? (I can still modify an object.)
In Java we use final keyword with variables to specify its values are not to be changed.
But I see that you can change the value in the constructor / methods of the class. Again, if the variable is static then it is a compilation error.
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How to copy Java Collections list
...dge of the underlying type. In the case of Strings, which are immutable in Java (and .NET for that matter), you don't even need a deep copy. In the case of MySpecialObject, you need to know how to make a deep copy of it and that is not a generic operation.
Note: The originally accepted answer was...
Creating a custom JButton in Java
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When I was first learning Java we had to make Yahtzee and I thought it would be cool to create custom Swing components and containers instead of just drawing everything on one JPanel. The benefit of extending Swing components, of course, is to have t...
How to represent empty char in Java Character class
I want to represent an empty character in Java as "" in String...
15 Answers
15
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Passing an integer by reference in Python
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Python references are the exact same as Java references. And Java references are according to the JLS pointers to objects. And there is basically a complete bijection between Java/Python references and C++ pointers to objects in semantics, and nothing else describe...
Why is String immutable in Java?
...e a copy, and not change its copy. When thinking of a problem with mutable java.lang.Strings, think of how C++ solves this problem (since it has mutable std::strings.
– Limited Atonement
Jan 13 '16 at 15:48
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How is CountDownLatch used in Java Multithreading?
Can someone help me to understand what Java CountDownLatch is and when to use it?
12 Answers
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