Output.java

import java.io.*;
import java.util.*;
 
class Main {
    public static void main(String[] args) throws Exception {
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringBuilder sb = new StringBuilder();
        long start, end;
 
        // System.out.print TEST
        start = System.currentTimeMillis();
 
        for(int i=0; i<100000; i++)
            System.out.print(i);
 
        end = System.currentTimeMillis();
        double sysTime = (end-start) / 1000.0;
 
 
        // bw.write TEST
        start = System.currentTimeMillis();
 
        for(int i=0; i<100000; i++)
            bw.write(i + "");
 
        bw.flush();
        end = System.currentTimeMillis();
        double bwTime = (end-start) / 1000.0;
 
 
        // sb.append TEST
        start = System.currentTimeMillis();
 
        for(int i=0; i<100000; i++)
            sb.append(i);
 
        System.out.print(sb);
        end = System.currentTimeMillis();
        double sbTime = (end-start) / 1000.0;
 
        // Result
        System.out.println();
        System.out.println("sysTime : " + sysTime);
        System.out.println("bwTime : " + bwTime);
        System.out.println("sbTime : " + sbTime);
    }
}

OutputResult.txt

sysTime : 5.411
bwTime : 0.274
sbTime : 0.229