instanceof

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How to check instanceof on an argument that is a Class object?

I\'m trying to build a generic class loader. I need to check classes that I load against a method argument to determine if they are of the same class.[详细]

2023-02-21 04:51 分类：问答
instanceof Vs getClass( )

I see gain in performance when using getClass() and == operator over instanceOf operator. Objectstr = new Integer(\"2000\");[详细]

2023-02-10 13:17 分类：问答
Is using Java's instanceOf compatible with the "program to an interface" design principle?

As you know the \'program to an interface\' des开发者_开发知识库ign principle broadly prefers supertypes instead of concrete types or implementations.[详细]

2023-02-10 05:02 分类：问答
Manipulate PHP-instanceof-operator for wrapper-class

I\'d like to have a generic wrapper-class for some classes to intercept and manipulate some of the method-calls. Method-call-forwarding, intercepting, no problem so far. But after thinking a while, i[详细]

2023-02-09 11:09 分类：问答
Propagating a function to parents

I have a PHP object that consists of a set of classes. For sake of simplicity lets call it an object of class C that extends class B which in its turn extends class A. At some point in my code I want[详细]

2023-02-06 10:14 分类：问答
Java: instanceof Generic

Isn\'t there any way to find the class-typ开发者_如何学Pythone of a generic? if (T instanceof String) {[详细]

2023-02-04 06:38 分类：问答
Why does `instanceof` error rather than return `false` when used for 2 incompatible classes?

I\'m reading this: http://j开发者_如何学Goava.sun.com/docs/books/jls/third_edition/html/expressions.html#15.20.2[详细]

2023-01-31 10:05 分类：问答
Generics and instanceof - java

OK this is my class, it encapsulates an object, and delegates equals and to String to this object, why I can´t use instance of???[详细]

2023-01-29 11:18 分类：问答
Why cast after an instanceOf?

In the example below (from my coursepack), we want to give to the Square instance c1 the reference of some other object p1, but on开发者_StackOverflow中文版ly if those 2 are of compatible types.[详细]

2023-01-25 08:44 分类：问答
How inefficient is passing Collections.unmodifiable* an instance which is already wrapped with Collections.unmodifiable*?

I have bits of piecework being done by different custom (source code unavailable) frameworks which hand back Map instances. Unfortunately, these frameworks are not consistent in their returning Map in[详细]

2023-01-24 05:38 分类：问答