methods

问题 This may looks like a duplicate of this question. But this is different. I was trying to refactor my legacy code by using method injection in spring. I have a bean class which contains many static helper methods. My targeted method as follows: Context.java private static MessageSender messageSender; //... public static MessageSender getMessageSender(){ return messageSender; } Context bean <bean id="context" class="org.abc.Context"> <property name="messageSender"><ref bean="mailMessageSender"/

问题 i want to update files to Alfresco. i upload it and when i want to update (with same name) i have errors "duplicate child name". i want to keep both of files with the same name on Alfresco and to change only the "file versions" (the name to Alfresco will be one but have file versions 1.0 , 1.1, 1.2). Below is my java code that i have the problem. protected void executeFunction(AlfrescoRestClient alfrescoClient, AlfrescoSOAPClient alfrescoSOAPClient) throws Exception { String lastFileId = "";

问题 I have two method in SQLiteConnection class, which is public void UserA(String user, String name, String email, byte[] blob){}; and public void UserB(String user, String name, String email, byte[] blob){}; I want to combine the value that get in this two method, pass it the third method which use to store in sqlite database. public void TwoUser(String user1, String name1, String email1, byte[] blob1, String user2, String name2, String email2, byte[] blob2){}; But I don't know how to access

问题 I am relatively new to Jquery and so accept that the answer could be pretty obvious. I have a plugin that provides a function, but when I run my program I get the console error: Cannot call method 'createEvent' of undefined Like I said I have probably missed something simple but I cannot find what. The var desiredValue is, of course, retrieving the correct data and I have ensured the plugin is linked correctly in the header. If anyones got any advice they can give that would be very much

问题 For the longest time i have been doing JavaScript classes by doing the following function MyClass(){ this.v1; this.foo = function(){ return true; } }; Then i found TypeScript and it looks like it compile its Classes down to var MyClass = (function () { function MyClass(message) { this.v1 = message; } MyClass.prototype.foo = function () { return "Hello, " + this.v1; }; return MyClass; })(); Another Method i have found a lot on the web is var MyClass = { v1:1, foo: function(){ return true; } };

问题 Typically Java methods look like: public <U,V> U doSomething(V aReference) { // Do something } This typically means that the method doSomething() returns a null if it fails (for whatever reason) or a valid object reference. In some cases the "valid object reference" may itself be null . For example, the method aMap.get(k) may return null if there is no key k or if there is a key k but its corresponding value is null . Confusion! Not to mention NullPointerException s if 50% of your LOC isn't

问题 I currently have a few fragments which are all organised in tabs and i want fragment A to call a method in frag B. So I know I need to call the activity which then calls the function in B, I have seen people mentioning to use ExampleFragment fragment = (ExampleFragment) getFragmentManager().findFragmentById(R.id.example_fragment); fragment.<specific_function_name>(); I am having a problem though as my fragments are added with a tab listener not a fragmentmanager so I have no idea how to use

问题 I am experimenting with DOM event handlers, and I put in my Constructor's prototype a function that works on the DOM div element, which is a property created by the constructor in my object. It displays the object correctly, but the only thing that does not work is that it thinks that in my method, .keyCode , is a property of undefined and gives me an error message: TypeError: Cannot read property 'keyCode' of undefined (line 16 in function KeyBlock.move) This is my method, along with my

问题 This question already has answers here : Ruby variable (Array) assignment misunderstanding (with push method) (2 answers) Closed 4 years ago . Couldn't explain my question succinctly enough in the title, so I'm putting it here. It will actually be easier to show the code before asking my question: array1 = [] array2 = [1,2,3] array1 = array2 #=> array1 = [1,2,3] array2.clear #=> array1 = [] #=> array2 = [] Why does using the .clear method on the second array also clear what is in the first

问题 I ran into some very strange behaviour on PHP5.4 (also present in 5.5). Basically, I am calling a non-static method statically and I am not getting an E_STRICT error where I definitely should be getting one. <?php error_reporting(E_ALL); class A { public function iAmNotStatic() {} } Now, if I do this: A::iAmNotStatic(); Then I get the error as expected Strict standards: Non-static method A::iAmNotStatic() should not be called statically . And also, if I make the call from object context, I