visual basic 2010 barcode generator Converting C++ Abstract Classes into Java Interfaces in Java

Creation QR Code ISO/IEC18004 in Java Converting C++ Abstract Classes into Java Interfaces

Converting C++ Abstract Classes into Java Interfaces
Generate Quick Response Code In Java
Using Barcode creator for Java Control to generate, create QR Code JIS X 0510 image in Java applications.
Quick Response Code Decoder In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
One of the most innovative aspects of Java is the interface As explained earlier in this book, an interface specifies the form of its various methods without specifying any implementation details Each class that implements an interface does so by creating the actual methods declared by the interface Thus, in Java an interface is the means by which you can define the general form of a class while ensuring that all specific versions of the class conform to the same set of rules The interface is one of the ways that Java provides support for polymorphism In C++, there is no direct parallel to the interface Instead, in C++, if you wish to define the form of a class without defining implementation details, you must do so by using an abstract class Abstract classes in C++ are similar to abstract classes in Java: they do not contain a full set of implementation details In C++, an abstract class contains at least one pure virtual function A pure virtual function defines no implementation; it only defines the function prototype Thus, a pure virtual function in C++ is essentially the same as an abstract method in Java In C++, abstract classes serve a function similar to interfaces in Java For this reason, they are one of the items that you will want to watch for when converting code to Java While not all C++ abstract classes can be converted into Java
Encoding Barcode In Java
Using Barcode drawer for Java Control to generate, create barcode image in Java applications.
Barcode Decoder In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
- 650 -
QR Code JIS X 0510 Maker In C#
Using Barcode generator for VS .NET Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
Draw QR Code ISO/IEC18004 In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create QR Code image in ASP.NET applications.
interfaces, many can Let's look at two examples Here is a short C++ program that uses an abstract class called IntList to define the form of an integer list An implementation of this class is created by IntArray, which uses an array to implement a list of integers // A C++-style abstract class and its implementation #include <iostream> #include <cstdlib> using namespace std; // An abstract class that defines the form of an integer list class IntList { public: virtual int getNext() = 0; // pure virtual functions virtual void putOnList(int i) = 0; }; // Create an implementation of an integer list class IntArray : public IntList { int storage[100]; int putIndex, getIndex; public: IntArray() { putIndex = 0; getIndex = 0; } // Return next integer in list int getNext() { if(getIndex >= 100) { cout << "List Underflow"; exit(1); } getIndex++; return storage[getIndex-1]; } // Put an integer on the list void putOnList(int i) { if(putIndex < 100) { storage[putIndex] = i; putIndex++; } else { cout << "List Overflow"; exit(1); } } }; int main() { IntArray nums; int i; for(i=0; i<10; i++) numsputOnList(i); for(i=0; i<10; i++) cout << numsgetNext() << endl; return 0;
QR Code ISO/IEC18004 Creator In .NET
Using Barcode creator for Visual Studio .NET Control to generate, create QR Code image in .NET applications.
QR Code ISO/IEC18004 Maker In VB.NET
Using Barcode creation for VS .NET Control to generate, create QR Code 2d barcode image in .NET applications.
- 651 -
Matrix 2D Barcode Generation In Java
Using Barcode creation for Java Control to generate, create 2D Barcode image in Java applications.
Creating Code 128 Code Set C In Java
Using Barcode creator for Java Control to generate, create USS Code 128 image in Java applications.
} In this program, the abstract class IntList defines only the form of an integer list It contains only pure virtual functions and does not declare any data For these reasons, it can be made into an interface when the program is converted into Java, as shown here: // Here, IntList is made into an interface which IntArray implements // Define interface for an integer list interface IntListIF { int getNext(); void putOnList(int i); } // Create an implementation of an integer list class IntArray implements IntListIF { private int storage[]; private int putIndex, getIndex; IntArray() { storage = new int[100]; putIndex = 0; getIndex = 0; } // Create an implementation of an integer list public int getNext() { if(getIndex >= 100) { Systemoutprintln("List Underflow"); Systemexit(1); } getIndex++; return storage[getIndex-1]; } // Put an integer on the list public void putOnList(int i) { if(putIndex < 100) { storage[putIndex] = i; putIndex++; } else { Systemoutprintln("List Overflow"); Systemexit(1);
Creating GS1-128 In Java
Using Barcode encoder for Java Control to generate, create USS-128 image in Java applications.
Create Code 39 Extended In Java
Using Barcode drawer for Java Control to generate, create Code 39 image in Java applications.
class ListDemo { public static void main(String args[]) { IntArray nums = new IntArray(); int i; for(i=0; i<10; i++) numsputOnList(i); for(i=0; i<10; i++) Systemoutprintln(numsgetNext());
Painting 2 Of 5 Industrial In Java
Using Barcode printer for Java Control to generate, create Standard 2 of 5 image in Java applications.
Paint GTIN - 13 In Java
Using Barcode generation for BIRT reports Control to generate, create GS1 - 13 image in BIRT applications.
GS1-128 Creation In None
Using Barcode printer for Online Control to generate, create UCC-128 image in Online applications.
Paint European Article Number 13 In Visual Studio .NET
Using Barcode creation for .NET Control to generate, create EAN 13 image in .NET applications.
Creating UPCA In C#.NET
Using Barcode encoder for Visual Studio .NET Control to generate, create UPC-A image in .NET framework applications.
UCC - 12 Scanner In VB.NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Code 39 Recognizer In VS .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET applications.
Print 1D Barcode In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create 1D Barcode image in ASP.NET applications.
Copyright © OnBarcode.com . All rights reserved.