Walkins Openings in India & Interview Questions

Walkins in Mumbai, Bangalore, Chennai, Delhi, Gurgaon, Pune


‘Java Interview Questions’ - KyaPoocha.com

Is &&= a valid Java operator? 

No, it is not.  Read more »

Name the eight primitive Java types. 

The eight primitive types are byte, char, short, int, long, float, double, and boolean.  Read more »

Which class should you use to obtain design information about an object? 

The Class class is used to obtain information about an object’s design.  Read more »

What is the relationship between clipping and repainting? 

When a window is repainted by the AWT painting thread, it sets the clipping regions to the area of the window that requires repainting.  Read more »

Is “abc” a primitive value? 

The String literal “abc” is not a primitive value. It is a String object.  Read more »

What is the relationship between an event-listener interface and an event-adapter class? 

An event-listener interface defines the methods that must be implemented by an event handler for a particular kind of event. An event adapter provides a default... Read more »

What modifiers may be used with an interface declaration? 

An interface may be declared as public or abstract.  Read more »

Is a class a subclass of itself? 

Yes, a class is a subclass of itself.  Read more »

What event results from the clicking of a button? 

The ActionEvent event is generated as the result of the clicking of a button.  Read more »

How can a GUI component handle its own events? 

A component can handle its own events by implementing the required event-listener interface and adding itself as its own event listener.  Read more »

What is the difference between a while statement and a do statement? 

A while statement checks at the beginning of a loop to see whether the next loop iteration should occur. A do statement checks at the end of a loop to see whether... Read more »

How are the elements of a GridBagLayout organized? 

The elements of a GridBagLayout are organized according to a grid. However, the elements are of different sizes and may occupy more than one row or column of the... Read more »

What advantage do Java’s layout managers provide over traditional windowing systems? 

Java uses layout managers to lay out components in a consistent manner across all windowing platforms. Since Java’s layout managers aren’t tied to absolute sizing... Read more »

What is the Collection interface? 

The Collection interface provides support for the implementation of a mathematical bag - an unordered collection of objects that may contain duplicates.  Read more »

What modifiers can be used with a local inner class? 

A local inner class may be final or abstract.  Read more »

What is the difference between static and non-static variables? 

A static variable is associated with the class as a whole rather than with specific instances of a class. Non-static variables take on unique values with each object... Read more »

What is the difference between the paint() and repaint() methods? 

The paint() method supports painting via a Graphics object. The repaint() method is used to cause paint() to be invoked by the AWT painting thread.  Read more »

What is the purpose of the File class? 

The File class is used to create objects that provide access to the files and directories of a local file system.  Read more »

Can an exception be rethrown? 

Yes, an exception can be rethrown.  Read more »

Which Math method is used to calculate the absolute value of a number? 

The abs() method is used to calculate absolute values.  Read more »

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