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Articles by Chandu yadav
Page 54 of 81
How to make JOptionPane to handle Yes, No and Closed buttons in Java?
For this, create JOptionPane.QUESTION_MESSAGE and with the user action display individual messages, for example −int res = JOptionPane.showOptionDialog(new JFrame(), "Do you like Cricket?", "Hobbies", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, new Object[] { "Yes", "No" }, JOptionPane.YES_OPTION); if (res == JOptionPane.YES_OPTION) { System.out.println("Selected Yes!"); }Above, we have displayed a message on console if the user will selects YES button. The following is an example to make JOptionPane to handle Yes, No and Closed buttons −Examplepackage my; import javax.swing.JFrame; import javax.swing.JOptionPane; public class SwingDemo { public static void main(String args[]) { int res = JOptionPane.showOptionDialog(new JFrame(), "Do you like ...
Read MoreCombining multiple rows into a comma delimited list in MySQL?
To combine multiple rows into a comma delimited list, use the GROUP_CONCAT() method. Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Name varchar(30), Marks int ); Query OK, 0 rows affected (0.52 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Name, Marks) values('John', 67); Query OK, 1 row affected (0.25 sec) mysql> insert into DemoTable(Name, Marks) values('Carol', 69); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable(Name, Marks) values('Sam', 69); Query OK, 1 row affected (0.12 sec) mysql> insert ...
Read MoreAdd two weeks to a date in MySQL?
To add two weeks to a date in MySQL, use DATE_ADD() −insert into yourTableName(yourColumnName) values(date_add(now(), interval 2 week));Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, ShippingDate datetime ); Query OK, 0 rows affected (0.62 sec)Following is the query to get the current date −mysql> select now(); +-----------------------+ | now() | +-----------------------+ | 2019-06-02 10 :36 :49 | +-----------------------+ 1 row in set (0.00 sec)Insert some records in the table using ...
Read MoreHow to remove menus from MenuBar in Java?
Remove a menu from the MenuBar using the remove() method. Set the index for the menu you want to remove from the MenuBar.Let’s say we have the following two menus initially −The following is an example to remove one the above menus. Let’s say we are removing the 2nd menus “Edit” −Examplepackage my; import java.awt.event.KeyEvent; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; public class SwingDemo { public static void main(final String args[]) { JFrame frame = new JFrame("MenuBar Demo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JMenuBar menuBar = new JMenuBar(); JMenu ...
Read MoreChanging Class Members in Python?
Python object oriented programming allows variables to be used at the class level or the instance level where variables are simply the symbols denoting value you’re using in the program. At the class level, variables are referred to as class variables whereas variables at the instance level are referred to as instance variables. Let’s understand the class variable and instance variable through a simple example −# Class Shark class Shark: animal_type= 'fish' # Class Variable def __init__(self, name, age): self.name = name self.age = age # Creating objects of Shark class obj1 = Shark("Jeeva", 54) obj2 = Shark("Roli", 45) ...
Read MoreWhatsapp using Python?
In this section we are going to create a Whatsapp chatbots, but unlike few other chatbots for twitter or facebook, whatsapp chatbots don’t run on the platform directly because of whatsapp’s policies.But there is a way to get is done, using selenium, a very smart package in python with which developer’s can automate the browser’s activity. With this we can make use of whatsapp-web through the browser.RequirementsWe need three basic things to get things done: Selenium.We can install selenium very easily using pip, just run below command on your terminal −$pip install seleniumChrome/firefox or any other webdriver.As I using chrome ...
Read MoreJava Program to customize MenuBar and change the background color
Use the UIManager to customize the MenuBar:JMenuBar menuBar = new JMenuBar(); UIManager.put("MenuBar.background", Color.ORANGE);We have used the following above to update the background color of the MenuBar:UIManager.put("MenuBar.background", Color.ORANGE);The following is an example to customize MenuBar and change the background color:package my; import java.awt.Color; import java.awt.event.KeyEvent; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.UIManager; public class SwingDemo { public static void main(final String args[]) { JFrame frame = new JFrame("MenuBar Demo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JMenuBar menuBar = new JMenuBar(); UIManager.put("MenuBar.background", Color.ORANGE); JMenu fileMenu = new JMenu("File"); ...
Read MoreHow to expand JTree row to display all the nodes and child nodes in Java
To expand JTree row to display all the nodes and child nodes, use the expandRow() method in Java. At first, create a node −DefaultMutableTreeNode node = new DefaultMutableTreeNode("Project");Now, add nodes to the node created above −DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("App"); DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("Website"); DefaultMutableTreeNode node3 = new DefaultMutableTreeNode("WebApp"); node.add(node1); node.add(node2); node.add(node3);Now, create more nodes and set them as child nodes for the nodes we creted above −DefaultMutableTreeNode one = new DefaultMutableTreeNode("Learning website"); DefaultMutableTreeNode two = new DefaultMutableTreeNode("Business website"); DefaultMutableTreeNode three = new DefaultMutableTreeNode("News publishing website"); DefaultMutableTreeNode four = new DefaultMutableTreeNode("Android app"); DefaultMutableTreeNode five = new DefaultMutableTreeNode("iOS app"); DefaultMutableTreeNode ...
Read MoreHow to set a MatteBorder from BorderFactory in Java?
Set a MatteBorder from BorderFactory class −MatteBorder border = (MatteBorder)BorderFactory.createMatteBorder(2, -1, 5, 10, icon);Now, set the above created MatteBorder to a component −JButton button = new JButton("Matte Border"); button.setBorder(border);The following is an example to set a MatteBorder from BorderFactory class −Examplepackage my; import java.awt.BorderLayout; import java.awt.Container; import javax.swing.BorderFactory; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.border.Border; import javax.swing.border.EtchedBorder; import javax.swing.border.MatteBorder; public class SwingDemo { public static void main(String args[]) { JFrame frame = new JFrame("Demo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Border raisedBorder = new EtchedBorder(EtchedBorder.RAISED); ImageIcon icon = new ImageIcon("new.gif"); ...
Read MoreHow to set the grid color of a table in Java?
To set the grid color of a table, use the setGridColor() method.table.setGridColor(Color.yellow);Above, we have used the Color class to set the color.The following is an example to set the grid color of a table −Examplepackage my; import java.awt.Color; import javax.swing.BorderFactory; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.border.TitledBorder; public class SwingDemo { public static void main(String[] args) { JFrame frame = new JFrame(); JPanel panel = new JPanel(); panel.setBorder(BorderFactory.createTitledBorder( BorderFactory.createEtchedBorder(), "ODI Rankings", TitledBorder.CENTER, TitledBorder.TOP)); String[][] rec = { ...
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