What is scalability and performance?

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Performance is a measure of "how fast can you perform this task." and scalability describes how an application behaves as its workload and available computing resources increase.

2012-08-16, 2592👍, 0💬

How the object oriented approach helps us keep complexity of software development under control?
How the object oriented approach helps us keep complexity of software development under control? We can discuss such issue from the following aspects: Objects allow procedures to be encapsulated with their data to reduce potential interference. Inheritance allows well-tested procedures to be reused ... 2012-08-14, 2445👍, 0💬

What is design by contract?
What is design by contract? The design by contract specifies the obligations of a method to any other methods that may use its services and also theirs to it. For example, the preconditions specify what the method required to be true when the method is called. Hence making sure that preconditions ar... 2012-08-15, 2328👍, 0💬

In System.out.println(),what is System,out and println,pls explain?
In System.out.println(),what is System,out and println,pls explain? System is a predefined final class,out is a PrintStream object acting as a field member and println is a built-in overloaded method in the out object. 2012-08-20, 2224👍, 0💬

What are use cases?
What are use cases? A use case describes a situation that a program might encounter and what behavior the program should exhibit in that circumstance. It is part of the analysis of a program. The collection of use cases should, ideally, anticipate all the standard circumstances and many of the extra... 2012-08-15, 2196👍, 0💬

What is polymorphism?
What is polymorphism? Polymorphism means "having many forms". It allows methods (may be variables) to be written that needn't be concerned about the specifics of the objects they will be applied to. That is, the method can be specified at a higher level of abstraction and can be counted on to work e... 2012-08-14, 2153👍, 0💬

Can you write a Java class that could be used both as an applet as well as an application?
Can you write a Java class that could be used both as an applet as well as an application? A. Yes. Add a main() method to the applet. 2012-08-20, 2149👍, 0💬

What is a Container in a GUI?
What is a Container in a GUI? A Container contains and arranges other components (including other containers) through the use of layout managers, which use specific layout policies to determine where components should go as a function of the size of the container. 2012-08-13, 2147👍, 0💬

What is the benefit of subclass?
What is the benefit of subclass? Generally: The sub class inherits all the public methods and the implementation. The sub class inherits all the protected methods and their implementation. The sub class inherits all the default(non-access modifier) methods and their implementation. The sub class als... 2012-08-16, 2141👍, 0💬

How to add menushortcut to menu item?
How to add menushortcut to menu item? If you have a button instance called aboutButton, you may add menu short cut by calling aboutButton.setMnemonic('A'), so the user may be able to use Alt+A to click the button. 2012-08-17, 2125👍, 0💬

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