methods

问题 I am calling this method to my Login Form. I don't know what is wrong with this. I've created a class named MyConnection and this class contains my SQL ConnectionString. What i want is I can call this function ex. Class1 method named Myfunction would be called to my Login Form so calling a connection string would be faster. public static class MyConnection { public static SqlConnection getConnection() { string conn = "Data Source=EDGAR-PC\\SQLEXPRESS;Initial Catalog=Project1;Integrated

问题 class Foo { public function bar(){ echo "Non-static\n"; } public static function __callStatic($name, $arguments) { if ($name === 'bar') { echo "Static\n"; } } } Foo::bar(); Class Foo does not have a static bar method. That is why I was expecting the Foo::bar() to be handled by the __callStatic method. Unfortunately for me that's not happening for some reason. The non-static method is being called on null instead. Is it a bug or a feature? How can I make the __callStatic to handle that call of

问题 I'm still relatively new at Java and am working on a program for class. I have everything coded up and it's working great, but I need to exit a method when I type the string "exit". My current code will be below. I must have 3 methods (includes main) and a "while" loop (or do-while, but my professor has barred us from using those) as per the assignment. It's a "magic eight ball" program and the while loop is set to continue asking questions until the user types "exit" but I can't seem to get

问题 There are 2 files named: AnnuityDueGUI.java AnnuityDueResultGUI.java Under AnnuityDueGUI.java, there is this method as below: ============= public double calculateFADGUI(){ //FVA = A{[(1+i)^n – 1] / i} (1+i) String amountStr = amount.getText() ; //convert string to double dAmount = Double.parseDouble(amountStr) ; String iStr = iText.getText() ; dInterest = Double.parseDouble(iStr) ; String periodStr = period.getText() ; dPeriod = Double.parseDouble(periodStr) ; iPeriod = (int)dPeriod ; due =

问题 MyI don't understand why I get a compile error for this: public class Main_screen extends ListActivity { List<Object> completeList; private My_ArrayAdapter adapter; public void onCreate(Bundle icicle) { super.onCreate(icicle); completeList = getCompleteList(); adapter = new My_ArrayAdapter(this, completeList); setListAdapter(adapter); } public void doSth() { ... } } and in My_ArryAdapter: public class My_ArrayAdapter extends ArrayAdapter<Object> { private final List<Object> list; private

问题 I want to create a graphics whereby circles are overlapped and their colour fades out, also the circles should have a white space in between each other, something similar to this: Here is how far I've got: import java.awt.*; import java.awt.geom.*; import javax.swing.*; import java.awt.event.MouseListener; import java.awt.event.MouseEvent; class Circles extends JPanel implements MouseListener { public void mouseReleased(MouseEvent event) { } public void mousePressed(MouseEvent event) { }

问题 So i have a piece of code with a class like that: #include<iostream> #include<cstring> class stu { static int proba; public: stu(); static int no(){ return proba; } }; int stu::proba=0; stu::stu() { proba=proba+1; } int main() { std::cout<< stu::no << std::endl; } The output is 1. It does so even if i change stu::no so that it would be only {return 12;} Why does it happen? How do I fix it?? 回答1: Change it to std::cout<< stu::no() << std::endl; Without the () , I believe it's evaluating as a

问题 How to call method from code-behind.I use asp.net n c#.I'm not familiar in .net environment.This is my example c# in code-behind: public void HandleAction() { //HandleAction content } public void WriteTable() { //WriteTable content } I want to call it in markup page. I have use Response.Write to write the data in webpage. 回答1: You can call c# function in markup by using server tags <%= function() %> Please find more detail here :-http://weblogs.asp.net/ahmedmoosa/archive/2010/10/06/embedded

问题 I want to call ViewController 's method in AppDelegate.m. i have method method() in my Viewcontroller .i want it to be called when didSelectMethod() called in appdelegate.m . I have called method like this.- ViewController *vc=[[ViewController alloc]init]; [vc method]; method is called but not having same instance as actually method having. it having all nill values. can anyone give me right code for this what i want. Thank you Jagveer Rana 回答1: While this has been correctly answered for the

问题 I want to create a C++ program with limited privileges. I made some research on the internet and found out that I have to create a token and then use the AdjustTokenPrivileges() method to alter its privileges. However, I didn't quite understand how this is to be done. Can someone please provide me with an example of how to create a token and disable its privileges? Thanks :) 回答1: Did you check out the example at Executing Privileged Operations Using C++ ? Seems like you just need to figure