In many websites I have studied that scala is faster than Java. I have written code to test the time difference between these two but Scala takes more time. I don't know whether I am making any mistake. Please correct me if I am wrong.
Scala code
package com.first
import java.util.ArrayList
object Word extends App{
val absoluteResult = new ArrayList[Any]()
val before = System.currentTimeMillis()
var i =0
while (i<10000) {
i = i+1
val result = List("foo", 23, true).iterator
while (result.hasNext) {
absoluteResult.add(foo(result.next))
}
}
println("Took : "+(System.currentTimeMillis() - before)
+" ms, number of elements : "+absoluteResult.size)
def foo(obj : Any) =
obj match {
case _:String => "String"
case _:Boolean => "Boolean"
case _:Integer => "Integer"
case _ => throw new IllegalArgumentException()
}
}
output Took : 142 ms, number of elements : 30000
Java code
package com.first;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class quicksort {
public static void main(String[] args) {
List<Object> absoluteResult = new ArrayList<Object>();
long before = System.currentTimeMillis();
for (int i=0; i < 10000; i++) {
List<Object> result = new ArrayList<Object>();
result.add("foo");
result.add( 23);
result.add(true);
for (Object y : result) {
absoluteResult.add(foo(y));
}
}
System.out.println("Took : "+(System.currentTimeMillis() - before)
+" ms, number of elements : "+absoluteResult.size());
}
static String foo(Object s) {
if (s instanceof String) {
return "String";
} else if (s instanceof Boolean) {
return "Boolean";
} else if (s instanceof Integer) {
return "Integer";
} else {
throw new IllegalArgumentException();
}
}
}
output Took : 30 ms, number of elements : 30000
