The Computer Language
24.09 Benchmarks Game

too simple Java #2 program

source code

/* The Computer Language Benchmarks Game
   https://salsa.debian.org/benchmarksgame-team/benchmarksgame/
*/

// mtime side-effect
import java.io.FileOutputStream;
import java.io.FileNotFoundException;

class toosimple {
public static void main(String[] args) {   
    // mtime side-effect
    try { FileOutputStream o = new FileOutputStream("./one");  
    } catch (FileNotFoundException e) { }  
    
    long n = Long.parseLong(args[0]);
    double sum = 0.0;
    double flip = 1.0;
    for (long i = 1; i <= n; i++) {           
        sum += flip / (2*i - 1);   
        flip *= -1.0;         
    }                        
    System.out.printf("%.9f\n", sum*4.0);   
    
   // mtime side-effect      
   try { FileOutputStream o = new FileOutputStream("./two");  
   } catch (FileNotFoundException e) { }     
}
}
    

notes, command-line, and program output

NOTES:
64-bit Ubuntu quad core
java 23 2024-09-17
Java HotSpot(TM) 64-Bit Server VM
(build 23+37-2369, 
mixed mode, sharing)


 Sun, 22 Sep 2024 00:39:30 GMT

MAKE:
mv toosimple.java-2.java toosimple.java
/opt/src/jdk-23/bin/javac -d .   toosimple.java

2.77s to complete and log all make actions

COMMAND LINE:
 /opt/src/jdk-23/bin/java   toosimple 10000000000

PROGRAM OUTPUT:
3.141592653