Java and C

Java and C are two of the most common programming languages. When a person begins to learn computer science, he or she will learn either Java or C. We learn Java in CMSC 150, while one of my friends learns C++ in the introduction course of computer science of his university.

Both Java and C are imperative languages. The difference is that Java is object oriented, whereas C is function oriented. Unlike C, however, C++ supports object-oriented programming.

Compared with C, Java is more portable, as "write once, run anywhere". Different operating system can use JVM to interpret Java codes, but some C codes can only be executed in certain operating systems. This is because Java is interpreted language, and all codes will be transformed to bytecode and executed by JVM, whereas C is compiled language, and codes have to be translated by compiler to some codes that can be understood by the operating system first and then be executed.

Let’s compare Java and C specifically. See the following hello world codes from http://introcs.cs.princeton.edu/java/faq/c2java.html.

Java:

public class HelloWorld {

   public static void main(String[] args) {

       System.out.println("Hello");

   }

}

C:

#include<stdio.h>

int main(void) {

   printf("Hello\n");

   return 0;

}

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Writing References:

1.http://introcs.cs.princeton.edu/java/faq/c2java.html

2.http://durofy.com/10-major-differences-between-c-and-java/

Picture References:

1.http://code.rohitink.com/wp-content/uploads/2013/06/1301825696_183475245_1-Pictures-of-C-Java-for-10th-11th-12th-student-of-all-syllabus.jpg