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Programming Articles
Page 2488 of 2547
Java sql.Timestamp valueOf() method with example
The valueOf() method of the java.sql.Timestamp class accepts a String value representing a time stamp in JDBC escape format and converts the given String value into Timestamp object.Timestamp timeStamp = Time.valueOf("timeStamp_string");ExampleLet us create a table with name dispatches_data in MySQL database using CREATE statement as shown below:CREATE TABLE dispatches_data( ProductName VARCHAR(255), CustomerName VARCHAR(255), DispatchTimeStamp timestamp, Price INT, Location VARCHAR(255));Now, we will insert 5 records in dispatches_data table using INSERT statements:insert into dispatches_data values('Key-Board', 'Raja', TIMESTAMP('2019-05-04', '15:02:45'), 7000, 'Hyderabad'); insert into dispatches_data values('Earphones', 'Roja', TIMESTAMP('2019-06-26', '14:13:12'), 2000, 'Vishakhapatnam'); insert into dispatches_data values('Mouse', 'Puja', TIMESTAMP('2019-12-07', '07:50:37'), 3000, 'Vijayawada'); insert into ...
Read MoreJava Program to create rounded borders in Swing
Let us first create a Frame:JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setUndecorated(true);Now, create rounded borders:double x = 50; double y = 50; frame.setShape(new RoundRectangle2D.Double(x, y, 100, 100, 50, 50));The following is an example to create rounded borders in Swing:Exampleimport java.awt.geom.RoundRectangle2D; import javax.swing.JFrame; import javax.swing.JPanel; public class SwingDemo extends JPanel { public static void main(String[] args) { JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setUndecorated(true); double x = 50; double y = 50; frame.setShape(new RoundRectangle2D.Double(x, y, 100, 100, 50, 50)); ...
Read MoreJava sql.Date valueOf() method with example
The valueOf() method of the java.sql.Date class accepts a String value representing a date in JDBC escape format (yyyy-mm-dd) and convertsthe given String value into Date object.Date date = Date.valueOf("date_string");ExampleLet us create a table with name dispatches in MySQL database using CREATE statement as follows −CREATE TABLE dispatches( ProductName VARCHAR(255), CustomerName VARCHAR(255), DispatchDate date, DeliveryTime time, Price INT, Location VARCHAR(255));Now, we will insert 5 records in dispatches table using INSERT statements −insert into dispatches values('Key-Board', 'Raja', DATE('2019-09-01'), TIME('11:00:00'), 7000, 'Hyderabad'); insert into dispatches values('Earphones', 'Roja', DATE('2019-05-01'), TIME('11:00:00'), 2000, 'Vishakhapatnam'); insert into dispatches values('Mouse', 'Puja', ...
Read MoreHow to get the leaf after this node in a JTree component with Java?
Use the getNextLeaf() method to get the leaf after this node in a JTree. Here, we are displaying the leaf after node “three” in Console −System.out.println("Next leaf after this node = "+three.getNextLeaf());The following is an example to get the leaf node after this node in a JTree component −package my; import javax.swing.JFrame; import javax.swing.JTree; import javax.swing.tree.DefaultMutableTreeNode; public class SwingDemo { public static void main(String[] args) throws Exception { JFrame frame = new JFrame("Demo"); DefaultMutableTreeNode node = new DefaultMutableTreeNode("Products"); DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("Clothing (Product1 - P66778)"); DefaultMutableTreeNode ...
Read MoreI want to return the next node after this node in a JTree with Java
Use the getNextNode() method to get the next node after this node in Java. Here, we are displaying the next node of child node “eight” -System.out.println("Next node after this node = "+eight.getNextNode());The following is an example to return the next node after this node in a JTree -Examplepackage my; import javax.swing.JFrame; import javax.swing.JTree; import javax.swing.tree.DefaultMutableTreeNode; public class SwingDemo { public static void main(String[] args) throws Exception { JFrame frame = new JFrame("Demo"); DefaultMutableTreeNode node = new DefaultMutableTreeNode("Products"); DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("Clothing (Product1 - P66778)"); DefaultMutableTreeNode node2 ...
Read MoreJava Program to get the previous leaf from a JTree
Use the getPreviousLeaf() method to get the previous leaf in a JTree. Here, we are displaying the leaf before this node “eight” on Console -System.out.println("Get Previous Leaf = "+eight.getPreviousLeaf());The following is an example to get the previous leaf from a JTree -Examplepackage my; import javax.swing.JFrame; import javax.swing.JTree; import javax.swing.tree.DefaultMutableTreeNode; public class SwingDemo { public static void main(String[] args) throws Exception { JFrame frame = new JFrame("Demo"); DefaultMutableTreeNode node = new DefaultMutableTreeNode("Products"); DefaultMutableTreeNode node1 = new DefaultMutableTreeNode("Clothing (Product1 - P66778)"); DefaultMutableTreeNode node2 = new DefaultMutableTreeNode("Accessories (Product2 - P66779)"); ...
Read MoreHow to reorder the columns of a table in JDBC?
You can reorder the columns of a table in MySQL database using the ALTER TABLE command.SyntaxALTER TABLE table_name MODIFY column_name datatype AFTER another_columnAssume we have a table named dispatches_data in the database with 7 columns namely ProductName, CustomerName, DispatchDate, DeliveryTime, Price, Location and, ID with description as −//Retrieving the Time object Time timeObj = rs.getTime("DeliveryTime"); //Converting the Time object to String format String time = timeObj.toString();ExampleLet us create a table with name dispatches in MySQL database using CREATE statement as follows −CREATE TABLE dispatches( ProductName VARCHAR(255), CustomerName VARCHAR(255), Price INT, Location VARCHAR(255), DispatchTimeStamp timestamp);Now, we will ...
Read MoreHow to limit the values in a Number JSpinner Component with Java?
To limit the values in a number JSpinner component, use the SpinnerNumberModel that allows to set the min, max, step size and even the initial value −value − current value of the model min − first number in the sequence max − last number in the sequence stepSize − difference between elements of the sequenceLet us set the above values −int min = 0; int max = 10; int step = 1; int i = 1; SpinnerModel value = new SpinnerNumberModel(i, min, max, step);Now, we will set these values to our JSpinner −JSpinner spinner = new JSpinner(value);The following is an ...
Read MoreHow to set a value in a particular JTable cell with Java?
Let’s say initially our table is the following with a specific cell [2, 1] with value “Kane” −The following is an example to set a new value to the above table. Here, we will update the cell [2, 1] −table.setValueAt("Guptill", 2, 1);Let us see the complete example −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.ListSelectionModel; 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(), ...
Read MoreJava DatabaseMetaData getDatabaseProductVersion() method with example
The getDatabaseProductVersion() method of the DatabaseMetaData interface returns the version number of the underlying database in String format.To get the version of the underlying database −Make sure your database is up and running.Register the driver using the registerDriver() method of the DriverManager class. Pass an object of the driver class corresponding to the underlying database.Get the connection object using the getConnection() method of the DriverManager class. Pass the URL the database and, user name, password of a user in the database, as String variables.Get the DatabaseMetaData object with respect to the current connection using the getMetaData() method of the Connection ...
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