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Example:var v;var variablename; Here,I have only declare(created) variables not assigning any values to them. var v=7;var variablename=\"xyz\"; Here, I have assign the values to both variables are 7 and xyz respectively.
We assign number without quotes and if want to assign text to variables than write text with in quotes.
More interview questions and answers
Which method is used by the applet to recognize the height and width?
What is source and listener ?
What is controls and what are different types of controls in AWT?
What is the difference between choice and list?
What is the difference between scrollbar and scrollpane?
What is a layout manager and what are different types of layout managers available?
How are the elements of different layouts organized?
What are types of applets?
What are the restrictions imposed by a Security Manager on Applets?
What is the difference between the Font and FontMetrics classes?
What is the relationship between an event-listener interface and an event-adapter class?
How can a GUI component handle its own events?
What is the difference between the paint() and repaint() methods?
What interface is extended by AWT event listeners?
What is Canvas ?
What is default Look-and-Feel of a Swing Component?
What are the features of JFC?
What does x mean in javax.swing?
What are invisible components?
What is the default layout for a ContentPane in JFC?
What does Realized mean?
What are you understand about ECMAScript?
What is difference between Swing and JSF?
Why does JComponent class have add() and remove() methods but Component class does not?
What method is used to specify a container\'s layout?
What is the difference between AWT and SWT?
What is the difference between JFC & WFC?
What is a convertor?
What is the difference between a Canvas and a Scroll Pane?
What is the purpose of the enableEvents() method?
What is the difference between a MenuItem and a CheckboxMenuItem?
Which is the super class of all event classes?
How the Canvas class and the Graphics class are related?
What is the difference between a Window and a Frame?
What is the relationship between clipping and repainting?
What advantage do Java\'s layout managers provide over traditional windowing systems?
When should the method invokeLater() be used?
What is the diff b/w choice and the List ?
Which component subclass is used for the drawing and painting ?
Which containers may have a menu bar?
Which class is the immediate supar class of the menuComponent class?
How you define Comparison and Logical Operators?
What is the relationship b/w the Canvas class and the Graphics Class?
How are the elements of a borderLayout organized?
How are the elements of a GridBagLayout organized?
Difference b/w paint() and paintComponent()?
Give us the Name of the List LayoutManagers in Java?
What is the Collections API?
What is the List interface?
What is the Vector class?
What is an Iterator interface?
Which java.util classes and interfaces support event handling?
What is the GregorianCalendar class?
What is the Local class?
What is the SimpleTimeZone class?
What is the Map interface?
What is the highest-level event class of the event-delegation model?
What is the Collection interface?
What is the Set interface?
What is the typical use of Hashtable?
We trying to store an object using a key in a Hashtable. And some other object already exists in that location, then what will happen? The existing object will be overwritten? Or the new object will be stored elsewhere?
What is the difference between the size and capacity of a Vector?
Can a vector contain heterogenous objects?
Can a ArrayList contain heterogenous objects?
What is an enumeration?
Considering the basic properties of Vector and ArrayList, where will you use Vector and where will you use ArrayList?
How you use try..catch statement in JavaScrpt?
What is HashMap and Map?
What is the significance of ListIterator?
What is the difference b/w Iterator and ListIterator?
Difference between HashMap and HashTable?
What is the difference between set and list?
Difference between Vector and ArrayList? What is the Vector class?
What is an Iterator interface? Is Iterator a Class or Interface? What is its use?
How can we access elements of a collection?
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