PASTJL
PASTJL
/ Main.java
Created
February 1, 2013 18:03
Test String.substring with JDK 1.7.0_6+ and JDK 1.6.38
<PathToJdk6/7>java -Xms128M -Xmx128M teststring.Main 100000 1000000
On my desktop: jdk 1.7.0_11 => 33 seconds / 252 KBytes Memory jdk 1.6.0_38 => 25 milliseconds / 782 KBytes Memory 1000 times faster ! ( Ok! for this stupid test ;-) )
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| package teststring; | |
| import java.util.Random; | |
| public class Main { | |
| private static long now() { | |
| return System.currentTimeMillis(); | |
| } | |
| /** |