I will be talking about some of the major functions and uses six high-level programming languages. Java was developed by Sun MicroSystems and released in 1995. Java is based on C and C++ and incorporates many features object-oriented languages. It is a compiled language, but it’s code output is interpreted. This makes Java ideal for cross-development.
Object-oriented languages have become the modern standard in structured programming. Two modern languages that both implement the object-oriented paradigm are C++ and Java. C++ is a free-form, compiled, intermediate level language. It was created in 1983, and its most recent revision is C++11, revised in 2011. Java is a class-based, object-oriented language, which is regarded as a higher-level programming language than C++.
Now that I understand the mechanics of object oriented development, I can see that there were parts of the language that could be considered objects, especially from a design point of view. Even though most of my programs were written from the top down and were executed from the top down, a lot of them incorporated logic that was reused multiple times. Blocks of code that contained that logic could usually be segregated from the rest of the code. Instead of appearing multiple times, these blocks would be written only once, but “called” multiple times. After BASIC, the next language that I learned was Pascal, named after the seventeenth century French mathematician.
The threaded programs practially finish faster than non-threaded counterparts. It generally happens when threads run on a multiprocessor machine where every thread has its own processor. The multithreading process is accomplished in java class called java.lang.Thread. Every Thread object acts as a single thread of execution and that execution is performed in Thread object’s run() method. It is because the default run() method actually does nothing, we have to subclass Thread and override run() method to finish the work.
This situation is more complex since two key object- oriented features, such as polymorphic calls and multiple inheritance, are used at the same time. For TLM2 interfaces the arrangement of both compilers is as follows: • Microsoft Visual C++ 2008 (VC) distributes the information on each inherited class by placing them one next to another. If an inherited class has virtual methods, a pointer to its particular VTABLE is included. Since each interface has only one virtual method, there are four VTABLEs with only one entry pointing to the particular implementation of each method. When a call is made through a base class pointer, tlm fw transport if *p fw in Figure 5, the pointer is adjusted to point to its specific VPTR and class data.
Microsoft’s C# compiler for the .NET Framework is a conforming implementation of both of these standards. C# is an object-oriented language, but C# further includes support for component-oriented programming. Contemporary software design increasingly relies on software components in the form of self-contained and self-describing packages of functionality. Key to such components is that they present a programming model with properties, methods, and events; they have attributes that provide declarative information about the component; and they incorporate their own documentation. C# provides language constructs to directly support these concepts, making C# a very natural language in which to create and use software components.
We’ve already mentioned some of the most popular platforms like Windows 2000, Linux, Solaris, and MacOS. Most platforms can be described as a combination of the operating system and hardware. The Java platform differs from most other platforms in that it’s a software-only platform that runs on top of other hardware-based platforms. The Java platform has two components: • The Java Virtual Machine (Java VM) • The Java Application Programming Interface (Java API) You’ve already been introduced to the Java VM. It’s the base for the Java platform and is ported onto various hardware-based platforms.
Consumer software programs are compiled and translated into machine language before they are sold. Some manufacturers provide source code, but usually only programmers find the source code useful. Thus programs bought off the shelf can be executed, but usually their source code cannot be read or modified. When executing (running), the compiler first parses (or analyzes) all of the language statements syntactically one after the other and then, in one or more successive stages or "passes", builds the output code, making sure that statements that refer to other statements are referred ... ... middle of paper ... ... sequence comparison methods. GAMS -- a high-level modeling system for mathematical programming problems.
Lesson C introduced us to two-dimensional arrays, which are basically the same as a one-dimensional array with more than one row/column to populate and use. This lesson also covered how to use the “GetUpperBound” method with two-dimensional arrays. Chapter 10 was all about structures and sequential access files. Lesson A started out b... ... middle of paper ... ...when multiple methods need to have differing parameters in order to do what is basically the same task. Lesson C concluded the chapter by having us code a project with base classes and derived classes.