Tests two float arrays for equality. : Float « Data Type « Java Tutorial






  1. Java Tutorial
  2. Data Type
  3. Float
import java.util.Arrays;

/* 
 * JCommon : a free general purpose class library for the Java(tm) platform
 * 
 *
 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jcommon/index.html
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * -------------------
 * ArrayUtilities.java
 * -------------------
 * (C) Copyright 2003-2005, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: ArrayUtilities.java,v 1.7 2008/09/10 09:21:30 mungady Exp $
 *
 * Changes
 * -------
 * 21-Aug-2003 : Version 1 (DG);
 * 04-Oct-2004 : Renamed ArrayUtils --> ArrayUtilities (DG);
 *
 */

public class Main {

  /**
   * Tests two float arrays for equality.
   *
   * @param array1  the first array (<code>null</code> permitted).
   * @param array2  the second arrray (<code>null</code> permitted).
   *
   * @return A boolean.
   */
  public static boolean equal(final float[][] array1,
                              final float[][] array2) {
      if (array1 == null) {
          return (array2 == null);
      }

      if (array2 == null) {
          return false;
      }

      if (array1.length != array2.length) {
          return false;
      }

      for (int i = 0; i < array1.length; i++) {
          if (!Arrays.equals(array1[i], array2[i])) {
              return false;
          }
      }
      return true;
  }

}








2.11.Float
2.11.1.Java float is 32 bit single precision type and used when fractional precision calculation is required.
2.11.2.Floating­Point Types
2.11.3.Min and Max values of data type float
2.11.4.Use Float constructor to convert float primitive type to a Float object.
2.11.5.Java Float Comparison
2.11.6.Java Float isInfinite Method
2.11.7.Java Float isNaN Method
2.11.8.Java Float Wrapper Class
2.11.9.Pass floats as string literals to a method
2.11.10.Check if a string is a valid number
2.11.11.Use toString method of Float class to convert Float into String.
2.11.12.Declaring a variable of type float
2.11.13.Declaring more than one float variable in a single statement
2.11.14.Use Float.valueOf to convert string value to float
2.11.15.Convert Java Float to Numeric Primitive Data Types
2.11.16.Convert Java String to Float Object
2.11.17.Convert from float to String
2.11.18.Convert from String to float
2.11.19.Converting a String to a float type Number
2.11.20.Compare Two Java float Arrays
2.11.21.Compares two floats for order.
2.11.22.For a float value x, this method returns +1.0F if x >= 0 and -1.0F if x < 0. Returns NaN if x is NaN.
2.11.23.Tests two float arrays for equality.
2.11.24.Use System.out.printf to format float point number