java与cc++的区别（The difference between Java and C c++）.docVIP

java与cc++的区别（The difference between Java and C c++） Author: lindows Date: 2001-3-1 10:49:57 The difference between Java and C / C++ (OCR, by, Lindows) First of all, it should be clear that Java is developed by C++, which retains most of the content of c++, similar to c++, but syntax is clearer, smaller and easier to learn. It is a thorough study of a variety of programming languages On the basis of this, a new completely object-oriented language is generated by abandoning the deficiencies of other languages and fundamentally solving the inherent flaws of c++. Java and c++ have more similarities than differences, but the two languages ask several major differences to make Java easier to learn, and the programming environment is simpler. Because of the limitations of space, we can not completely list the differences, and list only the significant differences: 1. pointer Java does not have pointers and adds automatic memory management capabilities to effectively prevent pointer failures in C / c++ languages, such as system crashes caused by dangling pointers. A reference to an object returned than a w operation, similar to a reference in c++; in c++, new returns the pointer to an object. Without pointers in Java, you do not encounter statements like this: Mywork Mywork (); Programs without pointers cannot access memory that does not belong to them and eliminates common errors in c++, which is beneficial to the security of Java programs. 2. multiple inheritance C++ supports multiple inheritance, which is a feature of c++, which allows multiple superclass classes to derive a class. Although multiple inheritance is powerful, it can be complicated and cause a lot of trouble Its not easy to compile it. Java does not support multiple inheritance, but allows one class to inherit multiple interfaces (interfaces), implements the c++ multiple inheritance function, and avoids c++ Many defects. 3. data types and classes Java fJ, using a boolean type to integer and the butterfly