default-constructor

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Why do we need a default no argument constructor in Java?

Why do we need a default no argument constructor in many Java related APIs? Like as a general rule all java bean classes or entity classes (JPA etc) or JAX-WS implementation classes require a explicit[详细]

2023-01-04 14:47 分类：问答
How is the default constructor of System.Drawing.Graphics removed?

When I try to create an object of Graphics, why doesn\'t the following work? System.Drawing.Graphics graphicsObj = new System.Drawing.Graphics();[详细]

2022-12-31 10:22 分类：问答
How can I make the compiler create the default constructors in C++?

Is there a way to make the compiler create the default constructors even if I provide an explicit constructor of my own?[详细]

2022-12-28 03:07 分类：问答
compiler generated constructors [duplicate]

This question already has answers here: Conditions for automatic generation of default/copy/move ctor and copy/move assignment operator?[详细]

2022-12-22 09:36 分类：问答
Compiler complains about BOOST_CHECK_THROW on constructor

The following does not compile: class Foo { public: Foo( boost::shared_ptr< Bar > arg ); }; // in test-case[详细]

2022-12-22 05:54 分类：问答
Why is my default constructor for array not getting called here?

using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1[详细]

2022-12-21 06:04 分类：问答
Is there a reason to explicitly code a default constructor when there are no other constructors?

I recently saw this constructor in a class: public MyClass(){ } There were no other constructors. Is there a reason for this? Java automatically creates a default constructor, so why would you de[详细]

2022-12-21 01:43 分类：问答
Java: Instantiating a generic class with no default constructor

I am trying to do this: public class BaseTable<T extends TableEntry> { protected int mRows; protected int mCols;[详细]

2022-12-17 09:50 分类：问答
How to refrain from CS2512 correctly

Please help me with the following problem: I have the following classes: class ChemicalElement { private:[详细]

2022-12-17 04:02 分类：问答
Overloading Default Construction with Initializer List

I need to know how to get something to work. I\'ve got a class with a constructor and some constants initialized in the initializer list. What I want is 开发者_运维技巧to be able to create a different[详细]

2022-12-12 05:07 分类：问答