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Define the difference between StringBuffer and String class?
Java is increasingly used for middleware applications to communicate among Server and clients. Java has features like multithreading, portability and networking capabilities. Chang
creating a point of sale
Why there is a need to use primary key in database ? Primary key is a constraint basically used in datdabase to uniquely identify the records in the database.
Assistance for JSON authentication problem RSS/AOL/Android The key problem we face is how to authenticate afterward the user logged in the webview as well as then parse the JSON
Difference between the File and Random Access File classes? Ans) The File class encapsulates the files and directories of the local file system. The Random Access File class giv
What is the difference among ForwardAction and IncludeAction? Ans) The difference is that you require to use the IncludeAction only if the action is going to be contained by ano
write a program in java which enters name,roll #,and shows the sum of students english and maths marks?
The typical use of the roster class is to display a tree view of groups and entries along with the current presence value of each entry. As an example, see the image showing a Rost
What is linear search? It is the simplest form of search. It searches for the element sequentially starting from first element. This search has a drawback if element is located
What can you do with an exception once you've caught it? 1. Fix the difficulty and try again. 2. Do anything else instead. 3. Exit the application along with System.exit() 4
A string buffer implements a variable sequence of characters. A string buffer is a String, and can be customized. At any point of time it contains some particular sequence of characters, but the length and content of the sequence can be changed through certain method calls. A String class represents character strings. All string literals in Java programs, as in "abc" are constant and implemented as instances of this class; their values cannot be changed after they are formed.
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