Nguyễn Đình Đại

I really want to learn Java but I have no idea how to study it. I just keep reading the books yet have no idea how to program. :(

I am learning JSP, and have developed a books application, which displays the book-id,title,author and price. There are seperate text box for each of the field, whenever the user fills the form and hits submit button the value must be inserted into my database. If I try to submit it …

Like i heard that string is immutable mean cannot be changed once created so i tried: String name = "Hunain"; Console.Write("String_replaced="+ name.Replace('i', 'y') + "\n"); according to someone, string.Replace('','') throws a new object and doesn't modify existing string but it did like in above example, neither i stored it in …

address book holds a collection of entries, each recording a person's first and last names, address, city, state, zip, and phone number. It must be possible to add a new person to an address book, to edit existing information about a person (except the person's name), and to delete a …