Java faster than C [duplicate]

Question

Today I made a simple test to compare the speed between java and c - a simple loop that makes an integer "i" increment from 0 to two billion.

I really expected c-language to be faster than java. I was surprised of the outcome:

the time it takes in seconds for java: approx. 1.8 seconds

the time it takes in seconds for c: approx. 3.6 seconds.

I DO NOT think that java is a faster language at all, but I DO NOT either understand why the loop is twice as fast as c in my simple programs?

Did I made a crucial misstake in the program? Or is the compiler of MinGW badly configurated or something?

public class Jrand {

 public static void main (String[] args) {

    long startTime = System.currentTimeMillis();
    int i; 
    for (i = 0; i < 2000000000; i++) {
        // Do nothing!
    }
    long endTime = System.currentTimeMillis();
    float totalTime = (endTime - startTime);

    System.out.println("time: " + totalTime/1000);
 }

}

THE C-PROGRAM

#include<stdio.h>
#include<stdlib.h>
#include <time.h>
int main () {

    clock_t startTime;
    startTime = clock();

    int i;
    for (i = 0; i <= 2000000000; i++) {
        // Do nothing
    }
    clock_t endTime;
    endTime = clock();

    float totalTime = endTime - startTime;
    printf("%f", totalTime/1000);

    return 0;
}

Answer 1

Rebuild your C version with any optimization level other than -O0 (e.g. -O2) and you will find it runs in 0 seconds. So the Java version takes 1.6 seconds to do nothing, and the C version takes 0.0 seconds (really, around 0.00005 seconds) to do nothing.