A simple casting demo : Data Type cast « Data Type « Java

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Java » Data Type » Data Type cast 




A simple casting demo
    

/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
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 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
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 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * POSSIBILITY OF SUCH DAMAGE.
 
 * Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */



/** A simple casting demo. */
public class CastingDemo {
  public static void main(String[] argv) {
    int i, ans;
    double d = 2.75;
    i = d;      // EXPECT COMPILE ERROR
    i = (int)d;    // with cast; i gets 2
    System.out.println("i =" + i);
    ans = (int)d * 3;    // truncate d before multiplying
    System.out.println("ans =" + ans);
    ans = (int)(d * 3);  // multiplies before truncating
    System.out.println("ans =" + ans);
  }
}


           
         
    
    
    
  














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