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Java Programming
The Java programming language was released in 1995 as a core component of the Java platform of Sun Microsystems. It is a general-purpose, class-based, object-oriented language that is widely used in application software and web applications.
5,203 Questions
How do you represent Structured Query Language data types as fields?
When you create a table, you define the field names and the type of data they will contain. As an example (for Microsoft SQL Server)... CREATE TABLE SampleTable ( SampleTableID AS INT, SampleTableFirstName AS VARCHAR(50), SampleTableLastName AS VARCHAR(50), SampleTableAge AS DOUBLE ) In the above example, the field names all are prefixed with SampleTable (just for illustration) and the datatypes all follow the AS keyword.
What is a logical disciplined approach to programming?
Use Software Engineering techniques, specifically UML, to design the structure of the program before-hand. Then you know how different classes within the program (assuming you are using an Object-Oriented approach) need to communicate with each other, and you've broken the whole program down into the smaller more manageable chunks that need to be written.
What is meant by a thread in java programming language?
A thread and a process are same but a minor difference is there.
Process executes a program completely without splitting whereas a thread splits a program into smaller tasks and then execute them separately.And then combine the final result.
that is why a process is often called as Heavy weight and a thread is called as light weight.
What is Friend class How is it different from Abstract class?
Friend class is one which has been declared so (as a friend) inside other class to make it access the private members of the class which has extended it's friendship.
For Example,
class A
{
private:
.......
public:
..............
friend class B;
};
class B
{
.......
..............
};
As in the above code snippet, class A has extended it's friendship to class B by declaring B as it's friend inside it's area.
Since the Class B has became a friend of A, B can directly access all the private members of A. But the reverse is not possible.
Where as an abstract class is a one, which doesn't represent any particular object in nature. Instead they use give as abstract look of an object.
For instance,
When we say TATA Indca, Lancer, Ford Icon, Toyota Innova they are different car models. Each of them having their own properties and features, but all of them are Cars. So here, Car is an abstract class where as the others are concrete classes.
Flour and Water mixed together, or wall paper paste. :]
No. Traverse the ID3v2 metadata at the start of the file, looking for the TLEN frame. If it exists, the length can be found there. If there is no TLEN frame, then you will have to traverse each data frame to calculate the overall length. Once determined, insert a TLEN frame with the appropriate length into the file's ID3v2 metadata.
Is permission needed to run a raffles?
Yes, in some States, Cities, Counties, Townships, you need a licence.
Why steganography is good with java?
Steganography is good with JAVA because JAVA is a highly secured language.
If we use steganography with JAVA, it will enforce multiple levels of security of data.
form: RISHU
What is the difference between effective interest method and constant yield method?
An investment's annual rate of interest when compounding occurs more often than once a year. Calculated as the following:
Consider a stated annual rate of 10%. Compounded yearly, this rate will turn $1000 into $1100. However, if compounding occurs monthly, $1000 would grow to $1104.70 by the end of the year, rendering an effective annual interest rate of 10.47%. Basically the effective annual rate is the annual rate of interest that accounts for the effect of compounding.
What is dependency injection and how is it implemented in Java?
Such a pattern involves at least three elements: adependent, its dependencies and an injector(sometimes referred to as a provider or container). The dependent is a consumer that needs to accomplish a task in a computer program. In order to do so, it needs the help of various services (the dependencies) that execute certain sub-tasks. The provider is the component that is able to compose the dependent and its dependencies so that they are ready to be used, while also managing these objects' life-cycles. This injector may be implemented, for example, as a service locator, an abstract factory, a factory method or a more complex abstraction such as a framework.
The following is an example. A car (the consumer) depends upon an engine (the dependency) in order to move. The car's engine is made by an automaker (the dependency provider). The car does not know how to install an engine into itself, but it needs an engine in order to move. The automaker installs an engine into the car and the car utilizes the engine to move.
When the concept of dependency injection is used, it decouples high-level modules from low-level services. The result is called the dependency inversion principle. public interfaceEngine { public float getEngineRPM(); publicvoid setFuelConsumptionRate(floatflowInGallonsPerMinute); } public interface Car { public float getSpeedInMPH(); publicvoid setPedalPressure(float pedalPressureInPounds); }
Destructors are called when an object is no longer used. In a language like C++, this is done explicitly by the programmer when the delete operator is used on the object.
What are Static Imports in Java?
Static import is a java feature that introduced in Java 5.
Static imports allow you to import static members of a class to be used without the class qualifier.
And its also it should used in a moderate manner.
If you overuse the static import feature, it can make your program unreadable and unmaintainable, polluting its namespace with all the static members you import.
Source-
Oracle documentation.
Marcus Biel Clean Code Course
What are block of statements in java?
In computer programming, a block or code block is a lexical structure of source code which is grouped together. In Java it is sed in the same way: to group code and separate it from the rest.
What is the adjective for Java?
The proper adjective would be Javan, as in the Javan rhino, or Javanese.
Can you overload the constructor in java true or false?
Yes, you can have more than one constructor with a different set of parameters.
Since the final is only worth 25 percent of your grade, you would add your class average of 84 three times. Then take that total of 252 and add it to your exam grade of 75 for a total of 327. Divide this number by 4 to get your final average of 81.75 percent.
What is meant by function header in java?
That means, the header of a function. The header is the top part, before the opening braces.
What is the purpose of Java sleep?
It pauses the execution of the program (or of the thread where it is invoked, if you have multiple threads), for the specified time.
It pauses the execution of the program (or of the thread where it is invoked, if you have multiple threads), for the specified time.
It pauses the execution of the program (or of the thread where it is invoked, if you have multiple threads), for the specified time.
It pauses the execution of the program (or of the thread where it is invoked, if you have multiple threads), for the specified time.
What happens when you add primitive data type into a collection in java?
how do you get the value of the parameter in the applet
Is it necessary to know C or C plus plus to learn matlab?
No. Both C and C++ are low- to mid-level languages while MATLAB is a high-level language. The level determines the amount of abstraction involved, and the higher the amount of abstraction, the easier a language is to use. Knowledge of another language is never a bad thing though. The more languages you are familiar with, the more easily you can determine which language is best suited to a particular solution.
Java 7 is the most current version of Java. Many movies and games use Java.
Java is constantly being updated, but is still considered broken by major authorities in security. Check back later.
