How is the jtable class used in java?

Last Updated : 18 Jun, 2018 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.
Also Know, which is an example of JTable in Java?
This article shows a simple example of JTable. The JTable component provided as part of the Swing API in Java is used to display/edit two-dimensional data. This is similar to a spreadsheet. Let us consider some examples. Say that you want to display a list of employees belonging to an organization.
In addition, can You display tables of data in Java? See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases. With the JTable class you can display tables of data, optionally allowing the user to edit the data. JTable does not contain or cache data; it is simply a view of your data.
Subsequently, how is the JTable used in painting in Java?
The JTable uses integers exclusively to refer to both the rows and the columns of the model that it displays. The JTable simply takes a tabular range of cells and uses getValueAt (int, int) to retrieve the values from the model during painting.
Furthermore, how are column headers declared in Java JTable?
First of all, the column headers are identified and declared in a String array columns. Next, a 2d Object array named data is declared. Each inner array corresponds to a row of data. Within each array, the columns are separated by commas. Note that the column values are declared based on their type.

20 Similar Question Found

What is the purpose of jtable class in java?

Java JTable. The JTable class is used to display data in tabular form. It is composed of rows and columns. Let's see the declaration for javax.swing.JTable class.

Is there a lead selection in jtable table?

NOTE: JTable uses a very simple concept of selection, managed as an intersection of rows and columns. It was not designed to handle fully independent cell selections. If you clear all three check boxes (setting all three bound properties to false), there is no selection; only the lead selection is shown.

How is the jtable used in the swing api?

All components in the Swing API are built on the MVC pattern. Here, the JTable is the component which provides the view. The model is provided by an interface named TableModel. A default implementation is provided by the Swing API which is named as DefaultTableModel. This is internally used by JTable when we do not provide anything.

Where can i find the source code for jtable?

Here’s the full source code: * for a JTable component. Download the source code and demo program (executable jar file) in the Attachments section. Nam Ha Minh is certified Java programmer (SCJP and SCWCD).

Which is an example of jtable in java?

This article shows a simple example of JTable. The JTable component provided as part of the Swing API in Java is used to display/edit two-dimensional data. This is similar to a spreadsheet. Let us consider some examples. Say that you want to display a list of employees belonging to an organization.

How to create a jtable popup menu in java?

Add New Row: Appends a new empty row at the end of the table. Remove Current Row: Deletes the currently selected row. Remove All Rows: Deletes all rows in the table. Notice that we will make the row at the mouse-clicked position automatically selected, which is a typical behavior. Let’s go through the steps to create such a program in Java Swing.

How does jtable use a table model object?

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.

How to add column header in jtable in java?

If you are using NetBeans for Java, First drag jTable in jFrame after that simply follow the following steps. 1. Right Click on jTable control and find “Table Contents…” option. 2. Click on “Table Contents…” option. “Customizer Dialog” will be displayed. 3. “Customizer Dialog” contains three tabs (Table Model, Columns, Rows ). 4. 5.

How to change column color in jtable in java?

In getColumn () method, you can put any column number inside it and this will apply on that particular column's rows. In java, there is facility to change selection color of particular rows in jtable according to requirement. MyTblView .setSelectionBackground (Color.

How are fields defined in a jtable table?

Fields: Defines structure of the record, create/edit forms and table. jTable defines an row in the table as 'record'. So, a record must has fields as fields of a relational database table. NOTE: When you create a jTable instance, a table is created but no data is loaded to the table. load method is used to do it.

How to notify jtable about changes in data?

If you want to notify your JTable about changes of your data, use. tableModel.fireTableDataChanged() From the documentation: Notifies all listeners that all cell values in the table's rows may have changed. The number of rows may also have changed and the JTable should redraw the table from scratch.

How to refresh table model after insert in jtable?

- Stack Overflow JTable How to refresh table model after insert delete or update the data.

How can we remove a selected row from a jtable in java?

We can remove a selected row from a JTable using the removeRow () method of the DefaultTableModel class.

How can i clear the content of the jtable using java?

How can i clear the content of the JTable using Java.. You must remove the data from the TableModel used for the table. If using the DefaultTableModel, just set the row count to zero. This will delete the rows and fire the TableModelEvent to update the GUI.

How to apply a filter to a jtable?

The correct way to apply a filter to a JTable is through the RowFilter interface added to a TableRowSorter. Using this interface, the view of a model can be changed without changing the underlying model.

How to create a jtable with swing in java?

In this tutorials, we are going to create a simple JTable with Swing in Java. The Swing JTable is used to display data as a regular two-dimensional table of cells.

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:

Why does jtable not allow editing in java?

And when you run it, you can see that the table doesn't allow editing. Let us now proceed to allow editing on this table. Similar to what happens when the data is displayed, when editing happens, the table simply delegates saving of the data to the model. So, we need to first provide methods on the model that can facilitate this.

How to refresh data in jtable using swing timer?

This is VERY, VERY basic example. It's only intention is to demonstrate the use of fireTableRowsInserted. It uses a Swing Timer to add a new row every 125 milliseconds until you kill it ;) Because your table model is backed by its own List, it has no connection to your factory. It doesn't know when you add or remove objects from it.

How to refresh data in jtable using observablemodel?

When the new staff is added (i.e. addStaff is called) you should call ObservableModel's firePorpertyChange or something like that. firePropertyChange notify ies all propertyChangeListeners.