Java Array to String toString(Object[] a)

Description

Returns a string representation of the contents of the specified array.

License

Open Source License

Parameter

Parameter	Description
a	the array whose string representation to return

Return

a string representation of a

Declaration

public static String toString(Object[] a) 

Method Source Code

//package com.java2s;
/*/*from   w  ww .  j  av a 2  s  .  com*/
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This 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 software 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 software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

public class Main {
    /**
     * Returns a string representation of the contents of the specified array. If
     * the array contains other arrays as elements, they are converted to strings
     * by the {@link Object#toString} method inherited from <tt>Object</tt>, which
     * describes their <i>identities</i> rather than their contents.
     * <p>
     * The value returned by this method is equal to the value that would be
     * returned by <tt>Arrays.asList(a).toString()</tt>, unless the array is
     * <tt>null</tt>, in which case <tt>"null"</tt> is returned.
     * 
     * @param a the array whose string representation to return
     * @return a string representation of <tt>a</tt>
     * @see <a
     * href="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Arrays.html#toString(Object[])">
     * java.util.Arrays.toString(Object[])</a>
     */
    public static String toString(Object[] a) {
        if (a == null)
            return "null";
        if (a.length == 0)
            return "[]";

        StringBuffer buf = new StringBuffer();
        buf.append('[').append(a[0]);

        for (int i = 1; i < a.length; i++) {
            buf.append(", ").append(a[i]);
        }

        return buf.append(']').toString();
    }

    /**
     * Returns a string representation of the contents of the specified array. The
     * string representation consists of a list of the array's elements, enclosed
     * in square brackets ( <tt>"[]"</tt>). Adjacent elements are separated by the
     * characters <tt>", "</tt> (a comma followed by a space). Elements are
     * converted to strings by <tt>String.valueOf(long)</tt>. Returns
     * <tt>"null"</tt> if the array is <tt>null</tt>.
     * 
     * @param a the array whose string representation to return
     * @return a string representation of <tt>a</tt>
     * @see <a
     * href="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Arrays.html#toString(long[])">
     * java.util.Arrays.toString(long[])</a>
     */
    public static String toString(long[] a) {
        if (a == null)
            return "null";
        if (a.length == 0)
            return "[]";

        StringBuffer buf = new StringBuffer();
        buf.append('[');
        buf.append(a[0]);

        for (int i = 1; i < a.length; i++) {
            buf.append(", ").append(a[i]);
        }

        return buf.append(']').toString();
    }
}

Related

1. toString(Map arg)
2. toString(Object array)
3. toString(Object array)
4. toString(Object array)
5. toString(Object array[])
6. toString(Object[] array)
7. toString(Object[] array)
8. toString(Object[] array)
9. toString(Object[] array)