New JNI bindings

src/com/github/rjeschke/neetutils/Objects.java

Index: src/com/github/rjeschke/neetutils/Objects.java
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@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2012 René Jeschke <rene_jeschke@yahoo.de>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.rjeschke.neetutils;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 
+ * @author René Jeschke (rene_jeschke@yahoo.de)
+ */
+public final class Objects
+{
+  private Objects()
+  {
+    //
+  }
+
+  @Deprecated
+  public final static boolean implementsInterface(final Object o, final Class<?> interfaceClass)
+  {
+    return implementsInterface(o.getClass(), interfaceClass);
+  }
+
+  @Deprecated
+  public final static boolean implementsInterface(final Class<?> clazz, final Class<?> interfaceClass)
+  {
+    if (clazz.equals(interfaceClass))
+    {
+      return true;
+    }
+    final Class<?>[] is = clazz.getInterfaces();
+    for (int i = 0; i < is.length; i++)
+    {
+      if (is[i].equals(interfaceClass))
+      {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  public final static boolean isString(final Object o)
+  {
+    return o instanceof String;
+  }
+
+  public final static boolean isBoolean(final Object o)
+  {
+    return o instanceof Boolean;
+  }
+
+  public final static boolean isNumber(final Object o)
+  {
+    return o instanceof Number;
+  }
+
+  public final static boolean isMap(final Object o)
+  {
+    return o instanceof Map;
+  }
+
+  public final static boolean isList(final Object o)
+  {
+    return o instanceof List;
+  }
+
+  public final static boolean isCollection(final Object o)
+  {
+    return o instanceof Collection;
+  }
+
+  public final static boolean equals(final Object a, final Object b)
+  {
+    if (a == b)
+    {
+      return true;
+    }
+
+    if (a == null)
+    {
+      return b == null;
+    }
+
+    if (a.getClass() != b.getClass())
+    {
+      return false;
+    }
+
+    return a.equals(b);
+  }
+
+  public final static boolean isNullOrEmpty(final Object obj)
+  {
+    if (obj == null)
+    {
+      return true;
+    }
+
+    if (obj instanceof Collection)
+    {
+      return ((Collection<?>)obj).isEmpty();
+    }
+    if (obj instanceof Map)
+    {
+      return ((Map<?, ?>)obj).isEmpty();
+    }
+    if (obj instanceof String)
+    {
+      return ((String)obj).length() == 0;
+    }
+
+    return false;
+  }
+
+  @SuppressWarnings("unchecked")
+  public final static <A> A uncheckedCast(final Object a)
+  {
+    return (A)a;
+  }
+}