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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.http.util;
29  
30  public class Asserts {
31  
32      public static void check(final boolean expression, final String message) {
33          if (!expression) {
34              throw new IllegalStateException(message);
35          }
36      }
37  
38      public static void check(final boolean expression, final String message, final Object... args) {
39          if (!expression) {
40              throw new IllegalStateException(String.format(message, args));
41          }
42      }
43  
44      public static void notNull(final Object object, final String name) {
45          if (object == null) {
46              throw new IllegalStateException(name + " is null");
47          }
48      }
49  
50      public static void notEmpty(final CharSequence s, final String name) {
51          if (TextUtils.isEmpty(s)) {
52              throw new IllegalStateException(name + " is empty");
53          }
54      }
55  
56      public static void notBlank(final CharSequence s, final String name) {
57          if (TextUtils.isBlank(s)) {
58              throw new IllegalStateException(name + " is blank");
59          }
60      }
61  
62  }