01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: *
17: */
18: package org.apache.ivy.util;
19:
20: /**
21: * Utility class used to perform some checks.
22: */
23: public final class Checks {
24: private Checks() {
25: }
26:
27: /**
28: * Checks that an object is not null, and throw an exception if the object is null.
29: *
30: * @param o
31: * the object to check
32: * @param objectName
33: * the name of the object to check. This name will be used in the exception message.
34: * @throws IllegalArgumentException
35: * if the object is null
36: */
37: public static void checkNotNull(Object o, String objectName) {
38: if (o == null) {
39: throw new IllegalArgumentException(objectName
40: + " must not be null");
41: }
42: }
43:
44: }
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