< prev index next >

src/java.base/share/classes/java/lang/AbstractStringBuilder.java

Print this page


   1 /*
   2  * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


  69      */
  70     int count;
  71 
  72     /**
  73      * This no-arg constructor is necessary for serialization of subclasses.
  74      */
  75     AbstractStringBuilder() {
  76     }
  77 
  78     /**
  79      * Creates an AbstractStringBuilder of the specified capacity.
  80      */
  81     AbstractStringBuilder(int capacity) {
  82         if (COMPACT_STRINGS) {
  83             value = new byte[capacity];
  84             coder = LATIN1;
  85         } else {
  86             value = StringUTF16.newBytesFor(capacity);
  87             coder = UTF16;
  88         }























  89     }
  90 
  91     /**
  92      * Returns the length (character count).
  93      *
  94      * @return  the length of the sequence of characters currently
  95      *          represented by this object
  96      */
  97     @Override
  98     public int length() {
  99         return count;
 100     }
 101 
 102     /**
 103      * Returns the current capacity. The capacity is the amount of storage
 104      * available for newly inserted characters, beyond which an allocation
 105      * will occur.
 106      *
 107      * @return  the current capacity
 108      */


   1 /*
   2  * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


  69      */
  70     int count;
  71 
  72     /**
  73      * This no-arg constructor is necessary for serialization of subclasses.
  74      */
  75     AbstractStringBuilder() {
  76     }
  77 
  78     /**
  79      * Creates an AbstractStringBuilder of the specified capacity.
  80      */
  81     AbstractStringBuilder(int capacity) {
  82         if (COMPACT_STRINGS) {
  83             value = new byte[capacity];
  84             coder = LATIN1;
  85         } else {
  86             value = StringUTF16.newBytesFor(capacity);
  87             coder = UTF16;
  88         }
  89     }
  90 
  91     /**
  92      * Compares the objects of two AbstractStringBuilder implementations lexicographically.
  93      *
  94      * @since 11
  95      */
  96     int compareTo(AbstractStringBuilder another) {
  97         if (this == another) {
  98             return 0;
  99         }
 100 
 101         byte val1[] = value;
 102         byte val2[] = another.value;
 103         int count1 = this.count;
 104         int count2 = another.count;
 105 
 106         if (coder == another.coder) {
 107             return isLatin1() ? StringLatin1.compareTo(val1, val2, count1, count2)
 108                               : StringUTF16.compareTo(val1, val2, count1, count2);
 109         }
 110         return isLatin1() ? StringLatin1.compareToUTF16(val1, val2, count1, count2)
 111                           : StringUTF16.compareToLatin1(val1, val2, count1, count2);
 112     }
 113 
 114     /**
 115      * Returns the length (character count).
 116      *
 117      * @return  the length of the sequence of characters currently
 118      *          represented by this object
 119      */
 120     @Override
 121     public int length() {
 122         return count;
 123     }
 124 
 125     /**
 126      * Returns the current capacity. The capacity is the amount of storage
 127      * available for newly inserted characters, beyond which an allocation
 128      * will occur.
 129      *
 130      * @return  the current capacity
 131      */


< prev index next >