JLabel is a class of java Swing . JLabel is used to display a short string or an image icon . JLabel can display text, image or both . JLabel is only a display of text or image and it cannot get focus . JLabel is inactive to input events such a mouse focus or keyboard focus.
What is the purpose of JTable?
The purpose of JTable is to display or edit data in a table format that has rows and columns . It is almost like a spreadsheet. It helps in keeping information in a processed and calculative manner.
What is a 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.
What is table model in Java?
getColumnClass(int columnIndex) Returns the most specific superclass for all the cell values in the column. This is used by the JTable to set up a default renderer and editor for the column. Parameters: columnIndex – the index of the column.
How do you create a table in Java?
- Click the Launch button to run SimpleTableDemo using JavaTM Web Start (download JDK 7 or later). ...
- Click the cell that contains “Snowboarding”. ...
- Position the cursor over “First Name”. ...
- Position the cursor just to the right of a column header.
What is Java Swing package?
Java Swing tutorial is a part of Java Foundation Classes (JFC) that is used to create window-based applications. ... swing package provides classes for java swing API such as JButton, JTextField, JTextArea, JRadioButton, JCheckbox, JMenu, JColorChooser etc.
What is setBounds in Java Swing?
setBounds is used to define the bounding rectangle of a component . This includes it’s position and size. The is used in a number of places within the framework. It is used by the layout manager’s to define the position and size of a component within it’s parent container.
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 a JScrollPane?
A JScrollPane provides a scrollable view of a component . When screen real estate is limited, use a scroll pane to display a component that is large or one whose size can change dynamically. Other containers used to save screen space include split panes and tabbed panes. The code to create a scroll pane can be minimal.
How do I make a JTable not editable?
6 Answers. private TableModel model = new DefaultTableModel(data, columnNames) { public boolean isCellEditable(int row, int column) { return false;//This causes all cells to be not editable } }; private JTable table = new JTable(model);
What is a table model?
Definition. Table Model is a data model created directly from an existing database table . This is like an abstract representation of your underlying table which you can easily manipulate, annotate, add custom dimensions and measures.
What is DefaultTableModel Java?
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 . When DefaultTableModel is used with a TableRowSorter this will result in extensive use of toString , which for non- String data types is expensive.
How do you attach a table to a panel?
You can make use of the following code. To add JTable to JPanel. JPanel panel = new JPanel(); JTable table = new JTable(rowData, colData); JScrollPane scrollPane = new JScrollPane(table); panel. add(scrollPane, BorderLayout.
What is arrays in Java?
An array in Java is a set of variables referenced by using a single variable name combined with an index number . Each item of an array is an element. All the elements in an array must be of the same type. ... An int array can contain int values, for example, and a String array can contain strings.
Is Java Swing still used in 2020?
Absolutely yes . Legacy swing applications are still supported and enhanced. There is no alternative for that.
