ArrayUtil


1   /* ==========================================
2    * JGraphT : a free Java graph-theory library
3    * ==========================================
4    *
5    * Project Info:  http://jgrapht.sourceforge.net/
6    * Project Creator:  Barak Naveh (http://sourceforge.net/users/barak_naveh)
7    *
8    * (C) Copyright 2003-2006, by Barak Naveh and Contributors.
9    *
10   * This library is free software; you can redistribute it and/or modify it
11   * under the terms of the GNU Lesser General Public License as published by
12   * the Free Software Foundation; either version 2.1 of the License, or
13   * (at your option) any later version.
14   *
15   * This library is distributed in the hope that it will be useful, but
16   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
17   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
18   * License for more details.
19   *
20   * You should have received a copy of the GNU Lesser General Public License
21   * along with this library; if not, write to the Free Software Foundation,
22   * Inc.,
23   * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
24   */
25  /* -----------------
26   * ArrayUtil.java
27   * -----------------
28   * (C) Copyright 2005-2006, by Assaf Lehr and Contributors.
29   *
30   * $Id: ArrayUtil.java 504 2006-07-03 02:37:26Z perfecthash $
31   *
32   * Original Author:  Assaf Lehr
33   * Contributor(s):   -
34   *
35   * Changes
36   * -------
37   */
38  package org.jgrapht.util;
39  
40  /**
41   * Utility class to iterate over arrays and use toString() on their elements. In
42   * jdk1.5 , a few very useful methods were added to the system.Arrays class.
43   * JGraphT should work on jdk1.4, so we re-implement them here, as utility
44   * methods.
45   *
46   * @author Assaf_Lehr
47   */
48  public class ArrayUtil
49  {
50  
51      //~ Methods ---------------------------------------------------------------
52  
53      /**
54       * Prints the contents of an array (not the array ref itself).
55       *
56       * @param array
57       */
58      public static String   toString(int [] array)
59      {
60          StringBuffer   stringBuffer = new StringBuffer  ("[");
61          stringBuffer.append(array[0]);
62          for (int i = 1; i < array.length; i++) {
63              stringBuffer.append(",").append(array[i]);
64          }
65          stringBuffer.append("]");
66          return stringBuffer.toString();
67      }
68  
69      /**
70       * Print the contents of an array (not the array ref itself).
71       *
72       * @param array
73       */
74      public static String   toString(Object   [] array, ToStringFunctor functor)
75      {
76          StringBuffer   stringBuffer = new StringBuffer  ("[");
77          stringBuffer.append(array[0]);
78          for (int i = 0; i < array.length; i++) {
79              stringBuffer.append(",").append(functor.toString(array[i]));
80          }
81          stringBuffer.append("]");
82          return stringBuffer.toString();
83      }
84  
85      /**
86       * Prints the contents of an array (not the array ref itself).
87       *
88       * @param array
89       */
90      public static String   toString(Object   [] array)
91      {
92          StringBuffer   stringBuffer = new StringBuffer  ("[");
93          stringBuffer.append(array[0]);
94          for (int i = 1; i < array.length; i++) {
95              stringBuffer.append(",").append(array[i]);
96          }
97          stringBuffer.append("]");
98          return stringBuffer.toString();
99      }
100 
101     //~ Inner Interfaces ------------------------------------------------------
102 
103     public interface ToStringFunctor
104     {
105         public String   toString(Object   arrayElement);
106     }
107 }
108
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags