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Yes, we can read from JOptionPane. Here, we will get the result of the showInputDialog() in a String variable −String input = JOptionPane.showInputDialog("Enter the C++ lessons you covered till now?");After getting the result, we will convert it to integer with parseInt() and display it on Console −int res = Integer.parseInt(input); System.out.println("Lessons covered = "+res);The following is an example to read from JOptionPane by requesting input from user −Examplepackage my; import java.awt.BorderLayout; import java.awt.Color; import java.awt.GridBagLayout; import java.awt.GridLayout; import java.net.URL; import javax.swing.ImageIcon; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; public class SwingDemo { public static void main(String[] args) throws Exception { ... Read More
Use ORDER BY clause for this. Let us first create a table −mysql> create table DemoTable ( Value1 int, Value2 int ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10, 40); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable values(50, 5); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(51, 56); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(52, 78); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values(90, 7); Query ... Read More
Tha data attribute of the element sets the URL of the resource, which can be audio, video, pdf, flash, etc. used by the object.Following is the syntax:The url is the URL of the resource used by the object.Let us now see an example to implement the data attribute of the element:Example Live Demo CSS Demonstrating Application OutputIn the above example, we have set the URL of the resource, which is a .swf file i.e. a flash file:The external link we have used in the element is:https://www.tutorialspoint.com/flex/samples/CSSApplication.swfRead More
In this article, we will learn about Stack & Queue structures in Python 3.x. Or earlier. Here we will discuss the working and modification within these data structures −This includes −Insertion operation (Push, Enqueue)Deletion operation (Pop, Dequeue)Display / Traversing OperationPrerequisites: List & List OperationsRelated Data Structure: List ManipulationRelated ImagesStackIn stacks, objects are stored one over another, and these objects get removed in the reverse order of the arrival i.e. LIFO concept is followed. LIFO means Last in First Out type arrangement is followed in the Stack data structure.Operations on a Stack −Addition / Appending of Element: This increases the stack ... Read More
In this section, we will see one interesting problem. There are N coins. we have to find what is the max height we can make if we arrange the coins as pyramid. In this fashion, the first row will hold 1 coin, second will hold 2 coins and so on.In the given diagram, we can see to make a pyramid of height three we need minimum 6 coins. We cannot make height 4 until we have 10 coins. Now let us see how to check the maximum height.We can get the height by using this formula.Example Live Demo#include #include using namespace ... Read More
Object slicing is used to describe the situation when you assign an object of a derived class to an instance of a base class. This causes a loss of methods and member variables for the derived class object. This is termed as information being sliced away. For example, class Foo { int a; }; class Bar : public Foo { int b; }Since Bar extends Foo, it now has 2 member variables, a and b. So if you create a variable bar of type Bar and then create a variable of type Foo and assign bar, you'll lose ... Read More
Here we will see how to hide some string into some binary code (Here binary code is represented in hexadecimal number).The approach is very simple. We can use the string stream to convert decimal number to hexadecimal numbers. Now from the string, we will read each character, and take its ASCII value, these ASCII values are converted into hexadecimal values. Then we can print them one by one.Example#include #include using namespace std; string dec_to_hex(int decimal){ //function is used to convert decimal to hex stringstream my_ss; my_ss
The statement db.collection.find() returns the cursor of Result Set of a query by which you can iterate over the result set or print all documents.Let us first create a collection with documents −> db.findCursorDemo.insertOne({"ClientFirstName":"John", "ClientLastName":"Smith"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd00a1c588d4a6447b2e05c") } > db.findCursorDemo.insertOne({"ClientFirstName":"Carol", "ClientLastName":"Taylor"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd00a26588d4a6447b2e05d") } > db.findCursorDemo.insertOne({"ClientFirstName":"David", "ClientLastName":"Miller"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd00a33588d4a6447b2e05e") }Following is the query to display all documents from a collection with the help of find() method −> db.findCursorDemo.find();This will produce the following output −{ "_id" : ObjectId("5cd00a1c588d4a6447b2e05c"), "ClientFirstName" : ... Read More
The DefaultTableModel is an implementation of TableModel that uses a Vector of Vectors to store the cell value objects. At first create a two dimensional array for rows and columns −DefaultTableModel tableModel = new DefaultTableModel(new Object[][] { { "India", "Asia" }, { "Canada", "North America" }, { "Singapore", "Asia" }, { "Malaysia", "Asia" }, { "Philippins", "Asia" }, { "Oman", "Asia" }, { "Germany", "Europe" }, { "France", "Europe" } }, new Object[] { "Country", "Continent" });Above, “Country” and “Continent” are the columns. Now, set the above set of rows and columns to JTable −JTable table = ... Read More
Yes, We can create a generator by using iterators in python Creating iterators is easy, we can create a generator by using the keyword yield statement. Python generators are an easy and simple way of creating iterators. and is mainly used to declare a function that behaves like an iterator.The generator is a function which we can iterate over one value at a time most probably in a day to day life, every programmer will use iterable objects like lists, strings, and Dict, etc. An iterator is an object that can be iterated through looping.The following example shows that Generators introduce Yield ... Read More