What is JTable in Java?
What is JTable in Java?
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. This arranges data in a tabular form. JTable(): A table is created with empty cells.
How do you set the size of a column in Java?
By default the width of a JTable is fixed, we can also change the width of each column by using table. getColumnModel(). getColumn(). setPreferredWidth() method of JTable class.
How do I change font size in JTable?
String columnNames[] = {“Time”,”MAP”,”ICP”,”CPP”}; String dataValues[][]= new String [countery] table = new JTable( dataValues, columnNames );
What is the purpose of 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 getModel in Java?
getModel() Method This method returns information on the current data model during the processing of a personalized reverse engineering. The list of available data is described in the pPropertyName values table.
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 do you add a table in Java?
Java JTable Example with ListSelectionListener
- import javax.swing.*;
- import javax.swing.event.*;
- public class TableExample {
- public static void main(String[] a) {
- JFrame f = new JFrame(“Table Example”);
- String data[][]={ {“101″,”Amit”,”670000″},
- {“102″,”Jai”,”780000″},
- {“101″,”Sachin”,”700000″}};
What is JMenu in Java?
JMenuBar is an implementation of menu bar . the JMenuBar contains one or more JMenu objects, when the JMenu objects are selected they display a popup showing one or more JMenuItems . JMenu basically represents a menu . It contains several JMenuItem Object . It may also contain JMenu Objects (or submenu).
What is JTextField in Java?
JTextField is a lightweight component that allows the editing of a single line of text. For information on and examples of using text fields, see How to Use Text Fields in The Java Tutorial. JTextField is intended to be source-compatible with java.
What is JscrollPane in Java?
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 to create a JTable table in Java?
JTable (int rows, int cols): Creates a table of size rows * cols. JTable (Object [] [] data, Object []Column): A table is created with the specified name where []Column defines the column names. addColumn (TableColumn []column) : adds a column at the end of the JTable. clearSelection () : Selects all the selected rows and columns.
How to change the width of a JTable?
By default the width of a JTable is fixed, we can also change the width of each column by using table.getColumnModel ().getColumn ().setPreferredWidth () method of JTable class.
What are the functions of the JTable function?
Functions in JTable: addColumn(TableColumn []column) : adds a column at the end of the JTable. clearSelection() : Selects all the selected rows and columns. editCellAt(int row, int col) : edits the intersecting cell of the column number col and row number row programmatically, if the given indices are valid and the corresponding cell is editable.
What is the setvalueat method in JTable?
setValueAt (Object value, int row, int col) : Sets the cell value as ‘value’ for the position row, col in the JTable. Below is the program to illustrate the various methods of JTable: