what is java? Explain some characteristic of java
Answers
Java is a general-purpose programming language that is class-based, object-oriented, and designed to have as few implementation dependencies as possible. It is intended to let application developers write once, run anywhere (WORA),[15] meaning that compiled Java code can run on all platforms that support Java without the need for recompilation.[16] Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of the underlying computer architecture. The syntax of Java is similar to C and C++, but it has fewer low-level facilities than either of them. As of 2019, Java was one of the most popular programming languages in use according to GitHub,[17][18] particularly for client-server web applications, with a reported 9 million developers.[19]
Characteristics of java:-
Simple:-
Java language is simple than the previous languages such as c and c++. Java eliminates the pointers concept which is earlier present in c and c++. Java also has a properties i.e. automatic allocation of memory and garbage collection, where as in c/c++ the garbage collection and allocation of memory will be done by the programmer which is a complex task.
Object oriented:-
All the programming languages apart from the c++ are procedural languages which are paradigm of procedures. Java programming language is object oriented because java uses the concept of the object. In java everything will depend on objects i.e. creating the objects and making objects to work together. The overall functionality of the high level program will depends on the objects. Because java is object oriented program it provides great range of reusability, modularity and flexibility.
Distributed:-
Java uses the http and ftp which are internet protocols, in order to have access the files over the network. So by using this libraries which are in java can easily make file transfers over the network which is connected to internet.
Interpreted:-
In order to run the java programs we need interpreter. When the java programs are compiled it produces the byte code, which is machine understandable language. The byte code which is produced after the compilation is machine independent, so that it can run on any system using java interpreter. Most of the compilers will convert the high level language instructions to the low-level machine understandable language as machine can’t understand the high level instruction. The machine code can only be executed on that compiled native machine. For example a source code is compile on windows platform, the executable file produced after can’t be executed on other platforms apart from the windows. But, coming to java it is different i.e. the source code is compiled once and the executable byte code can be run on any platform using java interpreter. The main functionality of the interpreter is, it converts the byte code to the machine language of the target machine.
Answer:
Java is a programming language it was developed by James joslin and the first released by Sun Microsystem in 1995 more than 3 billion devices run Java programs Java is a general purpose programming language that is class based object oriented and decide decide to have a few implementation dependence as possible Java applications are typically to by bytecode that can run on any Java Virtual Machine JVM godless of underline in computer architecture it was first appeared in May 23 1995 24 24 million 24 years ago