Soldato
- Joined
- 15 Nov 2008
- Posts
- 5,060
- Location
- In the ether
There seems to be quite a few Java threads around so I thought I'd suggest a thread to share some performance tips.
Here's a quickie. Try to use a StringTokenizer over a split:
Results:
849 Milliseconds
3896 Milliseconds
Not sure that's such a great way to test that, but hey.
Anyone got a tip they want to share?
Here's a quickie. Try to use a StringTokenizer over a split:
Code:
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.StringTokenizer;
public class strT {
static String temp="";
static long startTime = System.currentTimeMillis();
static long stopTime = System.currentTimeMillis();
public static void main(String args[]){
startTime = System.currentTimeMillis();
for(int i=0; i<1000000; i++){
StringTokenizer st = new StringTokenizer("poo,boo",",");
while(st.hasMoreTokens()){
temp = st.nextToken();
}
}
stopTime = System.currentTimeMillis();
System.out.println(stopTime-startTime+" Milliseconds");
String testString ="poo,boo";
startTime = System.currentTimeMillis();
for(int i=0; i<1000000; i++){
String elements[] = testString.split(",");
for(int k=0;k<elements.length;k++){
temp = elements[k];
}
}
stopTime = System.currentTimeMillis();
System.out.println(stopTime-startTime+" Milliseconds");
}
}Results:
849 Milliseconds
3896 Milliseconds
Not sure that's such a great way to test that, but hey.
Anyone got a tip they want to share?
