KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > geronimo > interop > util > IntegerCache


1 /**
2  *
3  * Copyright 2004-2005 The Apache Software Foundation
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 package org.apache.geronimo.interop.util;
19
20 public abstract class IntegerCache {
21     private static final int MIN_VALUE = -999;
22     private static final int MAX_VALUE = 9999;
23
24     private static final Integer JavaDoc[] CACHE = getCache();
25
26     public static Integer JavaDoc get(int i) {
27         if (i >= MIN_VALUE && i <= MAX_VALUE) {
28             return CACHE[i - MIN_VALUE];
29         } else {
30             return new Integer JavaDoc(i);
31         }
32     }
33
34     private static Integer JavaDoc[] getCache() {
35         Integer JavaDoc[] cache = new Integer JavaDoc[1 + MAX_VALUE - MIN_VALUE];
36         for (int i = MIN_VALUE; i <= MAX_VALUE; i++) {
37             cache[i - MIN_VALUE] = new Integer JavaDoc(i);
38         }
39         return cache;
40     }
41 }
42
Popular Tags