Java Programming for High Performance Computing

Constructor

In Java, programming a constructor is a special type of method that is used for initialized an object. A Java program invokes a constructor for the time of object creation. The contractor helps the object to constructs the values assign with the object (Taboada et al. 2013). In java, programming a constructor has the same name as the class, and it never has any return type.

The main purpose of a constructor is to initialize the value for an object, in Java programming; there are two type of constructor such a default constructor and parameterized constructor (Pokahr et al. 2014). A constructor always runs at the first time during compiling and runtime of a Java program. Now the below example shows how a constructor can be call at runtime.

Return Value

In Java programming, the return value is a value obtain by completes all statement in a method and return an output to the call part. In Java programming, the return statement uses to return a value or branch out of a control flow and exit a method.

The purpose of this return statement is outlined through the following example a method called getAreaVolumn ( ), produce a value from two given integer. Here the main method call getAreaVolumn ( ) through an object (Flanagan et al. 2013). The value that is returned forms this section must match the destination variable from where the method is called. Now this return statement is responsible for returning the value. Somewhere it can be used for controlling the program flow.

Object Class

The Java object class is the topmost class of all available class in java, by default many classes are used in Java among all of those object class is the parent class (Kaminsky 2014). An object class is used where a programmer does not know about the type of data they need to store. Now take an example how object class can be utilized in Java programming, a method called gettingObject(). Here this method can return any data type like student class, integer, string or employee class, etc. Now object class reference to refer that object like the following way:

Inheritance

The inheritance concept of Java programming define that is a process of a class acquires all properties such as fields and methods of another class (Pankratius, Schmidt and Garretón 2012). However, through this way the information is made manageable in a categorized direction. In Java programming, extends statement is to inherit a superclass. The example of extends keyword is given below.

The purpose of Main () within the Java code

In Java programming, a main method must include at least once because the runtime system starts this programming by the calling the main method (Pokahr et al. 2014). The main method has a particular syntax like “[public static void main (String args[])]”. In this declaration, the main declare as static because static define that the main () method is a class method.  Then the string parameter is utilized for pass the runtime system information to the current application. Here every string in this parameter is called command line argument (Schneider, Rasband and Eliceiri 2012). Now the command line arguments are used to affect the operations of the present application without recompile it.

Three advantages of using OO coding

 Object oriented coding has many significant advancements over many programming patterns.

Recycling and reuse coding blocks: Any objected created for OOP can be reused for others programs.

Encapsulations: This is a feature for helping programmers to reuse this without detail knowledge of its implementation. It also contributes to hiding some property for other programmers (Taboada 2013).

Design Benefits: Vast programs are difficult to design or arrange. However, OO coding provides the designers to create extensive planning phase, which provides better layout view and clear understanding.

References

Flanagan, C., Leino, K.R.M., Lillibridge, M., Nelson, G., Saxe, J.B. and Stata, R., 2013. PLDI 2002: Extended static checking for Java. ACM Sigplan Notices, 48(4S), pp.22-33.

Kaminsky, A., 2014. Parallel Java 2 Library. In The International Conference for high performance computing, networking, storage and analysis.

Pankratius, V., Schmidt, F. and Garretón, G., 2012, June. Combining functional and imperative programming for multicore software: an empirical study evaluating Scala and Java. In Proceedings of the 34th International Conference on Software Engineering (pp. 123-133). IEEE Press.

Pokahr, A., Braubach, L., Haubeck, C. and Ladiges, J., 2014, September. Programming BDI agents with pure Java. In German Conference on Multiagent System Technologies (pp. 216-233). Springer International Publishing.

Schneider, C.A., Rasband, W.S. and Eliceiri, K.W., 2012. NIH Image to ImageJ: 25 years of image analysis. Nat methods, 9(7), pp.671-675.

Taboada, G.L., Ramos, S., Expósito, R.R., Touriño, J. and Doallo, R., 2013. Java in the High Performance Computing arena: Research, practice and experience. Science of Computer Programming, 78(5), pp.425-444.

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