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What is the difference between Applet and Frame in java?
rajvinder kaur
- Sep 29th, 2011
applet is subclass of panel class. but frame is subclass of window class .applet has no menu bar .frame has menu bar.applet has no border.but frame has border.applet has no title bar but frame has.app...
VenkitaKrishnan
- Apr 20th, 2009
The difference is based on whether you want a Console based application or a Browser based application. For console applications use Frame and for browser applications use Applet.The other different i...
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SetSelectionInterval and addSelectionInterval
Can somebody let me know what is the difference between setSelectionInterval and addSelectionInterval with example?
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What is the use of immutable String class in java?
javabuddy
- Jan 26th, 2011
String is a special class and it has handled specially in JAVA.There are several benefits of String being immutable and there are certain things which are possible only because String is immutable.1) ...
rsaneve
- Jul 19th, 2006
String are made immutable because 1. better memory management.Generally thousands of string literals objects are created in any of the application.To avoid the individual memory allocation to all the ...
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In jTable How to set background color for particular rows based on some conditions?
JavaFan1212
- Apr 18th, 2010
Create a cell renderer class that implements TableCellRenderer. Create a subclass of JTable and override the method getCellRenderer and in this method set the background color based on a particular row.
harshagvs
- Jan 6th, 2008
Create a cellRenderer and set the required color based on the condition, then install this Renderer on all the cells
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How to create the Tabbed pane in swings?
mugesh
- Dec 19th, 2009
JTabbedPane jtp=new JTabbedPane();//u can add tabs to d panejtp.addTab("xxx");
kailuprakash
- Oct 27th, 2006
jTabbedPane = new javax.swing.JTabbedPane();And u can add properties like preferred size,layot and name ..jTabbedPane.setTabLayoutPolicy(javax.swing.JTabbedPane.SCROLL_TAB_LAYOUT);jTabbedPane.setName("Tabbed Panne");jTabbedPane.setPreferredSize(new java.awt.Dimension(600, 500));
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Swing Background Color
How to change default background color in Swing?
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What do you mean by content pane, root pane and scroll pane? What are its use?
LaksRao
- Sep 20th, 2009
Content Pane holds the container's visible components excluding Menu Bar.Every Top level container has a root pane which includes glass pane ( to intercept user events like mouse clicks), layered ...
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All swing components are light weight componants except for (Select Multiple)
A) JWindow, JFrameB) JDialogC) JAppletD) JPanel
Jags_vision
- Dec 12th, 2008
all AWT components are heavyweight and all Swing components are lightweight (except for the top-level ones: JWindow, JFrame, JDialog, and JApplet),
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Why swing is called as light weighted component?
shilpad
- Sep 5th, 2008
A heavyweight component is one that is associated with its own native screen resource (commonly known as a peer). A lightweight component(swing) is one that "borrows" the screen resou...
Kinjal Das
- Aug 26th, 2008
Let try to understand what is heavywheight component. If We see AWT Components (Earlier Java versions), while painting the components a very thick 3D frame is drawn. Hence the name of Heavy weight.And...
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Which classes and interfaces does Applet class consist? (Select Multiple)
A) The Applet classB) AppletContext Interface.C) AppletStub InterfaceD) AudioClip Interface
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The command ‘codebase’ is used in applets when
A) When the applet class file is not in the same directoryB) When the applet class file is in the same directoryC) When we need to get the parameters of the appletD) None of the above
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Which of the following are true about MouseListenerInterfaces? (Select Multiple)
A) The MouseListener interface defines methods for handling mouse clicks.B) The MouseMotionListener interface defines methods for handling mouse clicks.C) The MouseClickListener interface defines methods for handling mouse clicks.D) The MouseListenerInheritance interface defines methods for handling the clicking of a button.
zibyphilip
- Feb 13th, 2008
The following options are correct:A) TrueExplanation: MouseListener Interface defines the methods for mouse clicks, mouse pressed etc. Hence this is true.B) TrueExplanation: The MouseMotionListener de...
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Which of the following are true? (Select Multiple)
A) The AWT automatically causes a window to be repainted when a portion of a window has been minimized and then maximized.B) The AWT automatically causes a window to be repainted when a portion of a window has been covered and then uncovered.C) The AWT automatically causes a window to be repainted when application data is changed.D) The AWT does not support repainting operations.
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Lightweight components differ from heavy weight componants not because of one of the following reasons
A) A heavyweight component have transparent pixels which lightweight have opaque.B) A lightweight can appear to be non-rectangular while heavyweight are always rectangular.C) Mouse events on light weight componants fall through its parents while in the heavyweight it doesn’t.D) On overlapping of the lightweight component over the heavy weight component the heavy weight component is always on top.Explanation:...
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What are the borders provided by swings (Select Multiple)
A) SimpleB) MatteC) TitledD) AggregateExplanation: the fourth one is Compound
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How to assign different reference into an another reference.
suppose i have 4 JFrames in my project and i want to use single JDialog for all the JFrames, in such situation i have to pass the current JFrame class ie "this" keyword , the problem to receive different reference in the same class in different JFrames.
I have already tried by using Object class ,but it was not acceptedmy be through abstract classes or interfaces -
What are the immediate super classes of the following classes? (Select Multiple)
A) Container - ComponentB) MenuComponent - ObjectC) Dialog - WindowD) Applet - Panel
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A text field has a variable-width font. It is constructed by calling new TextField("iiiii"). What happens if you change the contents of the text field to "wwwww"? (Bear in mind that is one of the narrowest characters, and w is one of the widest.)
A) The text field becomes wider.B) The text field becomes narrower.C) The text field stays the same width; to see the entire contents you will have to scroll by using the ß and à keys.D) The text field stays the same width; to see the entire contents you will have to scroll by using the text field’s horizontal scroll bar.
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What is container
ramana
- Mar 23rd, 2007
Container is a place to store the components. if am not correct plz let me know
vmshenoy
- Jan 23rd, 2007
Container is a subclass of component.It has additional methods that allow other component objects to be nested within it!Other container objects can b stored inside of a container.
Java Swing Interview Qustions
Ans