gson/com/google/gson/internal/$Gson$Preconditions.java

   1 /*
   2  * Copyright (C) 2008 Google Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  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 com.google.gson.internal;
  18
  19 /**
  20  * A simple utility class used to check method Preconditions.
  21  *
  22  * <pre>
  23  * public long divideBy(long value) {
  24  *   Preconditions.checkArgument(value != 0);
  25  *   return this.value / value;
  26  * }
  27  * </pre>
  28  *
  29  * @author Inderjeet Singh
  30  * @author Joel Leitch
  31  */
  32 public final class $Gson$Preconditions {
  33   public static <T> T checkNotNull(T obj) {
  34     if (obj == null) {
  35       throw new NullPointerException();
  36     }
  37     return obj;
  38   }
  39
  40   public static void checkArgument(boolean condition) {
  41     if (!condition) {
  42       throw new IllegalArgumentException();
  43     }
  44   }
  45 }