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 JTable function?
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 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.
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 TableModel in Java Swing?
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 are the methods of Abstractbutton class in Java Swing?
MethodsDescriptionString 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.
How do I make a JTable not editable?
- On the code customizer, select the second drop down and choose custom property. …
- Now paste this: {public boolean isCellEditable(int row, int column){return false;}} before the last closing blacket );
What is the purpose of a rootkit Mcq?
Explanation: A rootkit is a program that modifies the core of the operating system: the kernel and libraries.What is the main function of SEBI Mcq?
The basic functions of the SEBI are to protect the interests of investors in securities and to promote the development of, and regulate the securities market and for matters connected therewith or incidental thereto.
What are Swing components in Java?Introduction to Swing Components in Java. 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.
Article first time published onWhat is the difference between scrollbar and ScrollPane?
A Scrollbar is a Component, but not a Container. A ScrollPane is a Container. A ScrollPane handles its own events and performs its own scrolling.
What is JDialog in Java?
JDialog is a part Java swing package. The main purpose of the dialog is to add components to it. JDialog can be customized according to user need . … JDialog(Dialog o, String s) : creates an empty dialog with a specified dialog as its owner and specified title.
What is difference between scroll bar and ScrollPane?
A JScrollBar is a component and it doesn’t handle its own events whereas a JScrollPane is a Container and it handles its own events and performs its own scrolling.
What is JTree function?
Class or InterfacePurposeJTreeThe component that presents the tree to the user.TreePathRepresents a path to a node.
How is JTable created?
JTable(): A table is created with empty cells. 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.
What is Setlayout in Java Swing?
2. Java (Swing/AWT) uses something called LayoutManager s to place UI components on the screen. These LayoutManagers are responsible to render component such as TextField, CheckBox, etc in a predefined manner on your Window. For example: A LayoutManager called FlowLayout simply places components one after the other.
Is cell editable JTable?
The isCellEditable() method of JTable (or the TableModel) controls whether a cell is editable or not. By default it just return “true“. So you can override the method to return a boolean value that is set by your “Modify” button.
How do I make TD editable?
- Weird. …
- Possible states of contenteditable: contenteditable**=”” or **contenteditable**=”true” Indicates that the element is editable.
What is AbstractButton in Java?
AbstractButton is an abstract base class for all button components ( JButton , JToggleButton , JCheckBox , JRadioButton , and JMenuItem and its subclasses). Since it provides functionality common to all types of buttons, we’ll cover it here before getting to the concrete button classes.
What is purpose of JTree Mcq?
The JTree class is used to display the tree structured data or hierarchical data. JTree is a complex component. It has a ‘root node’ at the top most which is a parent for all nodes in the tree. It inherits JComponent class.
What is JButton in Java Swing?
The class JButton is an implementation of a push button. This component has a label and generates an event when pressed. It can also have an Image.
What are the 5 major functions of SEBI?
To register and regulate the working of stock brokers, sub-brokers, share transfer agents, bankers to an issue, trustees of trust deeds, registrars to an issue, merchant bankers, underwriters, portfolio managers, investment advisers and such other intermediaries who may be associated with securities markets in any …
What are the powers of SEBI?
- To regulate and approve by-laws of stock exchanges.
- Inspect the books of accounts of recognized stock exchanges and call for periodical returns.
- Inspect the books of financial Intermediaries.
- Compel certain companies to get listed on one or more stock exchanges.
- To handle the registration of brokers.
What SEBI means?
The Securities and Exchange Board of India was established on April 12, 1992 in accordance with the provisions of the Securities and Exchange Board of India Act, 1992.
What is a rootkit?
A rootkit is malicious software that is extremely difficult to spot and, therefore, very difficult to remove. One of the most famous and dangerous rootkits in history was Stuxnet. It targeted Iranian nuclear facilities, and was created by the USA and Israel and who then lost control of it.
What is the purpose of rootkit?
The main purpose of rootkits is to mask malware payloads effectively and preserve their privileged existence on the system. For that reason, a rootkit will conceal files, malware processes, injected modules, registry keys, user accounts or even system registries running on system boot.
What causes rootkit?
A rootkit is software used by cybercriminals to gain control over a target computer or network. … Hackers install rootkits on target machines in a number of ways: The most common is through phishing or another type of social engineering attack.
What are swing elements?
Swing components are basic building blocks of an application. Swing has a wide range of various components, including buttons, check boxes, sliders, and list boxes. In this part of the Swing tutorial, we will present JButton , JLabel , JTextField , and JPasswordField .
What is swing material?
Wooden swing sets are generally crafted from redwood, cedar or pine. While wood offers a natural aesthetic that can blend in seamlessly with your backyard, it also requires a lot of upkeep to avoid looking shabby. Natural wood with no preservatives will need to be cleaned and stained or painted periodically.
What does swing consist of?
Swing is played with the same instruments you would find in a jazz band: there is a rhythm section consisting of piano, bass and drums, a brass section with trumpets and trombones, and a wind section with saxophones and clarinet, and, very occasionally, string instruments, such as the violin and the guitar, might also …
What is EDT in Swing?
The event dispatching thread (EDT) is a background thread used in Java to process events from the Abstract Window Toolkit (AWT) graphical user interface event queue. … Updating visible components from other threads is the source of many common bugs in Java programs that use Swing.
