1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
import junit.framework.TestCase;
public class TestValueOf extends TestCase {
public void testValueOf() {
final long start = System.currentTimeMillis();
for (int i = 0; i <= 300000000; i++) {
final int monInt = 10000;
final Integer t = Integer.valueOf(monInt);
}
final long end = System.currentTimeMillis();
System.out.println(end - start);
}
public void testNewInteger() {
final long start = System.currentTimeMillis();
for (int i = 0; i <= 300000000; i++) {
final int monInt = 10000;
final Integer t = new Integer(monInt);
}
final long end = System.currentTimeMillis();
System.out.println(end - start);
}
} |
