Check to if a class is an array in Java

//from   w  w w .  ja  v a 2s. c o  m
import java.io.Serializable;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

public class Main {
  public static void main(final String[] args) {
    isArray(Class.class);
    isArray(Comparable.class);
    isArray(Serializable.class);
    isArray(Integer.class);
    isArray(int.class);
    isArray(Float[].class);
    isArray(String.class);
    isArray(double[].class);
    isArray(boolean.class);

  }

  /** 
   * Demonstrates usage of <tt>isArray</tt> from Class.
   *
   * @param dataType The data type to check.
   *
   * @throws NullPointerException If the user passes null for dataType.
   */
  public static void isArray(final Class dataType) {
    if (dataType == null) {
      throw new NullPointerException();
    }
    if (dataType.isArray()) {
      System.out.print(dataType.getName());
      System.out.println("\t ==> " + dataType.getComponentType());
    }
  }
}