Use case diagram, Depicts the typical communication between external users ...

Depicts the typical communication between external users and the system. The emphasis is on what a machine does rather than how it works it. A use case is a summary of scenarios fo

What is constructor chaining, What is constructor chaining and how is it ac...

What is constructor chaining and how is it achieved in Java? A child object constructor always first requires to construct its parent (which in turn calls its parent constructo

Explain animate gifs, Explain Animate gifs? We can save 16 gif images ...

Explain Animate gifs? We can save 16 gif images of the previous instance in a single file in the form of an animated gif, and then used it in a regular tag to display a movi

Nested classes and Outer and inner classes,

Explain about class in java, In Java everything exists within a class. It d...

In Java everything exists within a class. It describes the behavior of the class and its characteristics. Java applications and applets are built in the class. Rules present for cl

Write a java console application, You are to write a Java console applicati...

You are to write a Java console application, following the Software Life Cycle model, which will read personnel records from a text file and store them in a data structure.  One li

Explain bios in java language, Explain BIOS in java language? BIOS bas...

Explain BIOS in java language? BIOS basically stand for Basic input/output system it is also called as the system BIOS or ROM BIOS is a de facto standard describing a firmware

Basic difference between java and c++, Both Java and C++ use same syntax an...

Both Java and C++ use same syntax and are Object Oriented, but there are several differences between Java and C++:   1.    Java does not use pointers. Pointers are inherently

Difference b/w deep cloning and shallow cloning of object, The default natu...

The default nature of an object's clone() function automatically provides a shallow copy. So to need a deep copy the classes have to be edited or adjusted.   Shallow co

What are the important beans lifecycle methods, There are two significant b...

There are two significant bean lifecycle methods. The first one is setup which is called when the bean is loaded on to the container. The second method is the teardown method which