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Use more efficient Long cache: Use "Long.valueOf(int)" instead of "new Long(long)" 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1153487 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Gary D. Gregory 2011-08-03 13:44:51 +00:00
parent ddeba76d0b
commit 4b1702489c
5 changed files with 33 additions and 33 deletions
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8
src/main/java/org/apache/commons/lang3/math/NumberUtils.java
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@ -30,11 +30,11 @@
public class NumberUtils {
/** Reusable Long constant for zero. */
public static final Long LONG_ZERO = new Long(0L);
public static final Long LONG_ZERO = Long.valueOf(0L);
/** Reusable Long constant for one. */
public static final Long LONG_ONE = new Long(1L);
public static final Long LONG_ONE = Long.valueOf(1L);
/** Reusable Long constant for minus one. */
public static final Long LONG_MINUS_ONE = new Long(-1L);
public static final Long LONG_MINUS_ONE = Long.valueOf(-1L);
/** Reusable Integer constant for zero. */
public static final Integer INTEGER_ZERO = Integer.valueOf(0);
/** Reusable Integer constant for one. */
@ -398,7 +398,7 @@ public static short toShort(String str, short defaultValue) {
// Integer.valueOf(String)
// new Double(String)
// new Byte(String)
// new Long(String)
// Long.valueOf(String)
// Long.getLong(String)
// Long.getLong(String,int)
// Long.getLong(String,Integer)

2
src/main/java/org/apache/commons/lang3/mutable/MutableLong.java
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@ -82,7 +82,7 @@ public MutableLong(String value) throws NumberFormatException {
* @return the value as a Long, never null
*/
public Long getValue() {
return new Long(this.value);
return Long.valueOf(this.value);
}
/**

20
src/test/java/org/apache/commons/lang3/ArrayUtilsTest.java
View File

@ -2551,12 +2551,12 @@ public void testToPrimitive_long() {
assertTrue(Arrays.equals(
new long[] {Long.MIN_VALUE, Long.MAX_VALUE, 9999999},
ArrayUtils.toPrimitive(new Long[] {new Long(Long.MIN_VALUE),
new Long(Long.MAX_VALUE), new Long(9999999)}))
ArrayUtils.toPrimitive(new Long[] {Long.valueOf(Long.MIN_VALUE),
Long.valueOf(Long.MAX_VALUE), Long.valueOf(9999999)}))
);
try {
ArrayUtils.toPrimitive(new Long[] {new Long(Long.MIN_VALUE), null});
ArrayUtils.toPrimitive(new Long[] {Long.valueOf(Long.MIN_VALUE), null});
fail();
} catch (NullPointerException ex) {}
}
@ -2570,13 +2570,13 @@ public void testToPrimitive_long_long() {
assertTrue(Arrays.equals(
new long[] {Long.MIN_VALUE, Long.MAX_VALUE, 9999999},
ArrayUtils.toPrimitive(new Long[] {new Long(Long.MIN_VALUE),
new Long(Long.MAX_VALUE), new Long(9999999)},1)));
ArrayUtils.toPrimitive(new Long[] {Long.valueOf(Long.MIN_VALUE),
Long.valueOf(Long.MAX_VALUE), Long.valueOf(9999999)},1)));
assertTrue(Arrays.equals(
new long[] {Long.MIN_VALUE, Long.MAX_VALUE, 9999999},
ArrayUtils.toPrimitive(new Long[] {new Long(Long.MIN_VALUE),
null, new Long(9999999)}, Long.MAX_VALUE))
ArrayUtils.toPrimitive(new Long[] {Long.valueOf(Long.MIN_VALUE),
null, Long.valueOf(9999999)}, Long.MAX_VALUE))
);
}
@ -2591,9 +2591,9 @@ public void testToObject_long() {
assertTrue(
Arrays.equals(
new Long[] {
new Long(Long.MIN_VALUE),
new Long(Long.MAX_VALUE),
new Long(9999999)},
Long.valueOf(Long.MIN_VALUE),
Long.valueOf(Long.MAX_VALUE),
Long.valueOf(9999999)},
ArrayUtils.toObject(
new long[] { Long.MIN_VALUE, Long.MAX_VALUE, 9999999 })));
}

12
src/test/java/org/apache/commons/lang3/math/NumberUtilsTest.java
View File

@ -187,10 +187,10 @@ public void testCreateNumber() {
assertEquals("createNumber(String) 3 failed", new Double("1234.5"), NumberUtils.createNumber("1234.5d"));
assertEquals("createNumber(String) 4 failed", new Float("1234.5"), NumberUtils.createNumber("1234.5F"));
assertEquals("createNumber(String) 4 failed", new Float("1234.5"), NumberUtils.createNumber("1234.5f"));
assertEquals("createNumber(String) 5 failed", new Long(Integer.MAX_VALUE + 1L), NumberUtils.createNumber(""
assertEquals("createNumber(String) 5 failed", Long.valueOf(Integer.MAX_VALUE + 1L), NumberUtils.createNumber(""
+ (Integer.MAX_VALUE + 1L)));
assertEquals("createNumber(String) 6 failed", new Long(12345), NumberUtils.createNumber("12345L"));
assertEquals("createNumber(String) 6 failed", new Long(12345), NumberUtils.createNumber("12345l"));
assertEquals("createNumber(String) 6 failed", Long.valueOf(12345), NumberUtils.createNumber("12345L"));
assertEquals("createNumber(String) 6 failed", Long.valueOf(12345), NumberUtils.createNumber("12345l"));
assertEquals("createNumber(String) 7 failed", new Float("-1234.5"), NumberUtils.createNumber("-1234.5"));
assertEquals("createNumber(String) 8 failed", Integer.valueOf("-12345"), NumberUtils.createNumber("-12345"));
assertTrue("createNumber(String) 9 failed", 0xFADE == NumberUtils.createNumber("0xFADE").intValue());
@ -208,9 +208,9 @@ public void testCreateNumber() {
assertEquals("createNumber(String) 15 failed", new BigDecimal("1.1E-700"), NumberUtils
.createNumber("1.1E-700F"));
}
assertEquals("createNumber(String) 16 failed", new Long("10" + Integer.MAX_VALUE), NumberUtils
assertEquals("createNumber(String) 16 failed", Long.valueOf("10" + Integer.MAX_VALUE), NumberUtils
.createNumber("10" + Integer.MAX_VALUE + "L"));
assertEquals("createNumber(String) 17 failed", new Long("10" + Integer.MAX_VALUE), NumberUtils
assertEquals("createNumber(String) 17 failed", Long.valueOf("10" + Integer.MAX_VALUE), NumberUtils
.createNumber("10" + Integer.MAX_VALUE));
assertEquals("createNumber(String) 18 failed", new BigInteger("10" + Long.MAX_VALUE), NumberUtils
.createNumber("10" + Long.MAX_VALUE));
@ -288,7 +288,7 @@ protected void testCreateIntegerFailure(String str) {
@Test
public void testCreateLong() {
assertEquals("createLong(String) failed", new Long("12345"), NumberUtils.createLong("12345"));
assertEquals("createLong(String) failed", Long.valueOf("12345"), NumberUtils.createLong("12345"));
assertEquals("createLong(null) failed", null, NumberUtils.createLong(null));
this.testCreateLongFailure("");
this.testCreateLongFailure(" ");

24
src/test/java/org/apache/commons/lang3/mutable/MutableLongTest.java
View File

@ -36,7 +36,7 @@ public void testConstructors() {
assertEquals(1, new MutableLong(1).longValue());
assertEquals(2, new MutableLong(new Long(2)).longValue());
assertEquals(2, new MutableLong(Long.valueOf(2)).longValue());
assertEquals(3, new MutableLong(new MutableLong(3)).longValue());
assertEquals(2, new MutableLong("2").longValue());
@ -50,19 +50,19 @@ public void testConstructors() {
public void testGetSet() {
final MutableLong mutNum = new MutableLong(0);
assertEquals(0, new MutableLong().longValue());
assertEquals(new Long(0), new MutableLong().getValue());
assertEquals(Long.valueOf(0), new MutableLong().getValue());
mutNum.setValue(1);
assertEquals(1, mutNum.longValue());
assertEquals(new Long(1), mutNum.getValue());
assertEquals(Long.valueOf(1), mutNum.getValue());
mutNum.setValue(new Long(2));
mutNum.setValue(Long.valueOf(2));
assertEquals(2, mutNum.longValue());
assertEquals(new Long(2), mutNum.getValue());
assertEquals(Long.valueOf(2), mutNum.getValue());
mutNum.setValue(new MutableLong(3));
assertEquals(3, mutNum.longValue());
assertEquals(new Long(3), mutNum.getValue());
assertEquals(Long.valueOf(3), mutNum.getValue());
try {
mutNum.setValue(null);
fail();
@ -82,7 +82,7 @@ public void testEquals() {
assertEquals(false, mutNumB.equals(mutNumC));
assertEquals(true, mutNumC.equals(mutNumC));
assertEquals(false, mutNumA.equals(null));
assertEquals(false, mutNumA.equals(new Long(0)));
assertEquals(false, mutNumA.equals(Long.valueOf(0)));
assertEquals(false, mutNumA.equals("0"));
}
@ -94,7 +94,7 @@ public void testHashCode() {
assertEquals(true, mutNumA.hashCode() == mutNumA.hashCode());
assertEquals(true, mutNumA.hashCode() == mutNumB.hashCode());
assertEquals(false, mutNumA.hashCode() == mutNumC.hashCode());
assertEquals(true, mutNumA.hashCode() == new Long(0).hashCode());
assertEquals(true, mutNumA.hashCode() == Long.valueOf(0).hashCode());
}
public void testCompareTo() {
@ -121,8 +121,8 @@ public void testPrimitiveValues() {
}
public void testToLong() {
assertEquals(new Long(0L), new MutableLong(0L).toLong());
assertEquals(new Long(123L), new MutableLong(123L).toLong());
assertEquals(Long.valueOf(0L), new MutableLong(0L).toLong());
assertEquals(Long.valueOf(123L), new MutableLong(123L).toLong());
}
public void testIncrement() {
@ -151,7 +151,7 @@ public void testAddValuePrimitive() {
public void testAddValueObject() {
MutableLong mutNum = new MutableLong(1);
mutNum.add(new Long(1));
mutNum.add(Long.valueOf(1));
assertEquals(2, mutNum.intValue());
assertEquals(2L, mutNum.longValue());
@ -167,7 +167,7 @@ public void testSubtractValuePrimitive() {
public void testSubtractValueObject() {
MutableLong mutNum = new MutableLong(1);
mutNum.subtract(new Long(1));
mutNum.subtract(Long.valueOf(1));
assertEquals(0, mutNum.intValue());
assertEquals(0L, mutNum.longValue());