As far as I know there is no guarantee that valueOf returns the same object
every time, it just gives class a chance to do it if it wants to.
----- Original Message -----
From: "lcj.dev" <lcj....@gmail.com>
To: "dev" <dev@harmony.apache.org>
Sent: Tuesday, November 16, 2010 2:44 PM
Subject: Question about Character.valueOf()
Hi, all
Why this may be failed for other JREs? assertSame(Character.valueOf(c),
Character.valueOf(c)).
Thanks.
please refers to this test case for details:
package org.apache.harmony.luni.tests.java.lang;
import junit.framework.TestCase;
public class CharacterImplTest extends TestCase {
public void test_valueOfC() {
// test the cache range
for (char c = '\u0000'; c < 512; c++) {
Character e = new Character(c);
Character a = Character.valueOf(c);
assertEquals(e, a);
// WARN: this assertion may not be valid on other JREs
assertSame(Character.valueOf(c), Character.valueOf(c));
}
// test the rest of the chars
for (int c = '\u0512'; c <= Character.MAX_VALUE; c++) {
assertEquals(new Character((char) c), Character.valueOf((char)
c));
}
}
}
2010-11-16
lcj.dev