01: /*
02: * Copyright 2002-2006 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16:
17: package org.springframework.core;
18:
19: /**
20: * Class that exposes the Spring version. Fetches the
21: * "Implementation-Version" manifest attribute from the jar file.
22: *
23: * <p>Note that some ClassLoaders do not expose the package metadata,
24: * hence this class might not be able to determine the Spring version
25: * in all environments. Consider using a reflection-based check instead:
26: * For example, checking for the presence of a specific Spring 2.0
27: * method that you intend to call.
28: *
29: * @author Juergen Hoeller
30: * @since 1.1
31: */
32: public class SpringVersion {
33:
34: /**
35: * Return the full version string of the present Spring codebase,
36: * or <code>null</code> if it cannot be determined.
37: * @see java.lang.Package#getImplementationVersion()
38: */
39: public static String getVersion() {
40: Package pkg = SpringVersion.class.getPackage();
41: return (pkg != null ? pkg.getImplementationVersion() : null);
42: }
43:
44: }
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