shahera.arafat

hii ^_^ I have a problem which is I have to delete a book when( I enter it's name and then press the delete button) and that book has been saved as an object in an array of list, and then written to a (txt )file.. once I press the …

hi :))) I want to ask about sth wich is > I have to write a programme using netbeans ..which I'm new with it ! that programme should let the user to enter the book name ,serial num. ,price ..etc in text fields , and I have buttons that let …

hello everybody ^^ I have to make a calander ,and to let the user to insert any event ! the calander it self is working <<but I don't know how can I write the code to give the user the ability to enter a new event by entering some fields …

hi :))) I have a pro. here which I can't use the keyListener and the buttons (ActionListener )at the same time !! I can use once a time either the keylistener OR ActionListener ! and in my prog. I should use both of them at the same time ! what …

Hi everyone :)))) there is a problem here !this code should draw a rectangle whenever I presse on the mouse ! but actually it doesn't do that !! when I execute the prog. it gives me the frame window ! but when I presse the mouse ,it should draw a …

hi ^_^ I want to write a code to set an (error) text in the Jtextfiled if the number contains more than 1 dot (eventHandling)! but my code actually didn't concatinate with the next digits I've enterded ,for example:(2. ) and stop ! so what is the right solution ?!! …

hi everyone :) I have a problem here >>which I can't add 2 numbers >> and I don't know what is the solution for that !!>>it always gives me an empty result !and that is because (num2) always parse a (null) value ! so how can I edit the value …

hi :) I'm wondering >>what is the use of (static) word in func.'s ? in this code what does it mean ??and if I didn't put it what would happen then ?? thanks :) import java.util.Scanner; class Average { public static double compute(int...x) { double sum=0; for(int item:x) sum+=item; return …

hi ^_^ I want to ask what is the difference between (System.out.println(B);) and (System.out.println(new string(B));) ?! actually it gives me the same output in my code! so then >>what is the use of [new string(array)] in general ??? thank U :))) public class CopyArray { public static void main(String[] args) …

I want to ask >>what is the use of (string args[])??? and how can I use system.exit >>without intially import the package (java.lang) ? thanks ^^ import javax.swing.JoptionPane; public welcome1 { public static void main (stirng args[]){ JoptionPane.showMessageDialoge(null,"welcome to java"); system.exit(0); } }

hi everyone :) I want a new questions on Hash functions and graphs >>like what process can we do on it !! any code ideas ? because I have an exam (data structure) so I want to study new ideas thanks ^_^

(node.h) This is the code and it gives me these errors >>which confused me alot >>what are these errors ?!! and what is the problem ?!! Error 3 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 12 graph.h Error 4 error C2660: 'graph::create' : …

how can I use it ?? and how can I allocate and intialize it ???

hi :) I have a pro. here>>I have to write a prog. to get info. from a file and then to take these info. and to put them in a tree >> so what happened here ,,that the compiler reads the info. correctly from the file and take them ..but …

#include<cstdio> #include<string> #include "inventory.h" #include "node.h" #include<iostream> using namespace std ; int main (){ inventory*obj1=new inventory(); int size; int id,i; char A[100]; char S_string; cout<<"plz enter the size of the list "<<endl; cin>>size; for(i=0;i<100;i++){ cin>>S_string; A[i]=S_string; } int a=strcmp(A[i],"new"); if(a==0){ for(int j=0;j<size;j++){ cout<<"enter the id"<<endl; cin>>id; obj1->new_id(id); } } getchar(); …

hii everyone :)) I want to write a prog. that the user can enter e.g (new 1112236) in the black screen ,, then the prog. should go to the (new)func. and create a new node with that ID ..soo how can I split the strings ?and how can I define …

hii :) I've seen alot in (void)func. that at the end of it they put (return;) why they put it ??what is the logical meaning of it ?? is it the same as (return0;) ?? actually it confused me alot :/ thanks ^_^

**this is the code and it keeps giving me a red line under (z=v2*v1),,please help me finding the mistake :( :( thanks ^_^ #pragma once using std::cout; using std::cin; using std::ostream; using std::istream; class vector{ public: friend ostream& operator<< (ostream&,vector&); friend istream& operator>> (istream&,vector&); friend vector operator*(vector &,vector &); vector(void); …