Q&A

Which interfaces are used by implementation of models for JTable?

Which interfaces are used by implementation of models for JTable?

Like JTree, JTable relies on a separate model object to hold and represent the data it displays and has its own package of helper classes, javax. swing. table. This package contains the TableModel interface and its default implementations, AbstractTableModel and DefaultTableModel.

What is JTable model?

The TableModel interface specifies the methods the JTable will use to interrogate a tabular data model. The JTable can be set up to display any data model which implements the TableModel interface with a couple of lines of code: For further documentation, see Creating a Table Model in The Java Tutorial.

What is JTable in Java?

The JTable is used to display and edit regular two-dimensional tables of cells. See How to Use Tables in The Java Tutorial for task-oriented documentation and examples of using JTable .

What is the use of DefaultTableModel in Java?

Class DefaultTableModel. This is an implementation of TableModel that uses a Vector of Vectors to store the cell value objects. Warning: DefaultTableModel returns a column class of Object .

How fetch data from database to JTable in Java?

Display Records From Database Using JTable in Java

  1. DisplayEmpData.java.
  2. emp.sql.
  3. Open the NetBeans IDE.
  4. Choose “Java” -> “Java Application” as in the following.
  5. Now type your project name as “JTableApp” as in the following.
  6. Now create a new Java Class with the name “DisplayEmpData” and provide the following code for it.

How do I make a table Swing?

Java JTable Example with ListSelectionListener

  1. import javax.swing.*;
  2. import javax.swing.event.*;
  3. public class TableExample {
  4. public static void main(String[] a) {
  5. JFrame f = new JFrame(“Table Example”);
  6. String data[][]={ {“101″,”Amit”,”670000″},
  7. {“102″,”Jai”,”780000″},
  8. {“101″,”Sachin”,”700000″}};

What are the methods of Abstractbutton class in Java Swing?

Commonly used Methods of AbstractButton class:

Methods Description
String getText() It is used to return the text of the button.
void setEnabled(boolean b) It is used to enable or disable the button.
void setIcon(Icon b) It is used to set the specified Icon on the button.
Icon getIcon() It is used to get the Icon of the button.

What is the purpose of JTable Mcq?

The JTable class is used to display data in tabular form. It is composed of rows and columns.

What is JscrollPane in Java Swing?

A JscrollPane is used to make scrollable view of a component. When screen size is limited, we use a scroll pane to display a large component or a component whose size can change dynamically.

How fetch data from database in JSP and display HTML table?

To do that, first we design a database of student data and then fetch it from JSP code on server.

  1. Step 1: Create a new database.
  2. Step 2: Design the database.
  3. Step 3: Make DSN.
  4. Step 4: Create a New Project.
  5. Step 5: Choose Project.
  6. Step 6: Name and Location.
  7. Step 7: Server and Setting.
  8. Step 8:Select Framework.

How fetch data from database in Java and display HTML form?

Program to display data from database through servlet and JDBC

  1. import java.io.*;
  2. import javax.servlet.*;
  3. import javax.servlet.http.*;
  4. import java.sql.*;
  5. public class display extends HttpServlet.
  6. {
  7. public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException.
  8. {

What are Swing components?

Swing components are the basic building blocks of an application. Every application has some basic interactive interface for the user. For example, a button, check-box, radio-button, text-field, etc. These together form the components in Swing.

What is the relationship between JTable and defaulttablemodel?

Every table object uses a table model object to manage the actual table data. A table model object must implement the TableModel interface. If the programmer does not provide a table model object, JTable automatically creates an instance of DefaultTableModel. This relationship is illustrated below.

What are the Constructors of JTable in Java?

Constructors in JTable: 1 JTable (): A table is created with empty cells. 2 JTable (int rows, int cols): Creates a table of size rows * cols. 3 JTable (Object [] [] data, Object []Column): A table is created with the specified name where []Column defines the column names.

How do you implement a table model in Java?

As the preceding code shows, implementing a table model can be simple. Generally, you implement your table model in a subclass of the AbstractTableModel class. Your model might hold its data in an array, vector, or hash map, or it might get the data from an outside source such as a database.

What is JTable in Java Swing?

Java Swing | JTable. The JTable class is a part of Java Swing Package and is generally used to display or edit two-dimensional data that is having both rows and columns. It is similar to a spreadsheet.