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Each language has some limitation so java have some limation Java uses the automatic garbage collector to handle all the memory management and the programmer has no control on it Different JVM is different system or different platform. The limitation is java Gui, Floating point arithmetic , Byte-code, Automatic memory management, Different JVM for different platform . Java compiler not yet well optimized takes more time to compile a large program than a good C++ compiler.
Java programs Byte-code interpretation is slow- 20-50 times slower than C++. GUI written in Java using Swing may not be the same as the widget look and feel of the underlying operating system. Java largely supports IEEE-754 floating point arithmetic, but certain features are not supported even with the use of the strictfp modifier in Java.
A computer on a network can communicate with other computers on the same network by exchanging data and files or by sending and receiving messages. Computers on a network can even work together on a large computation. The Java platform is highly regarded in networking because of its suitability for writing programs that use and interact with the resources on the Internet ( World Wide Web) in a secure way. Java provide Applet application is designed travel over the internet through which we can make an application which can run under Java-compatible browsers and transfer data from local machine to server through internet in secure way. Any information transmitted over computer networks Internet must be secure. It become more important when we are transferring most sensitive information like credit card numbers and other personal data. To make the Internet more useful in an enterprise and more secure for e-commerce, applications and e-business applications and their users' information, using encryption, authentication, and secure communications protocols.
The secure Hypertext Transfer Protocol (HTTPS), which is HTTP over the Secure Sockets Layer (SSL), is already being used successfully for e-commerce applications for security purpose. Java programming language provides a JSSE API. The Java Secure Socket Extension (JSSE) is a set of Java packages that enable secure Internet communications. Which use secure data passage of data between a client and a server running any application protocol ( HTTP, FTP, Telnet, or NTTP, over TCP/IP). Java also provides J2EE to develop an enterprise application for internet. J2EE contains so many components like Java Sever Pages, Sevlets, EJB JMS etc, through which a Java Developer can make an interactive, secure web base java applications.
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