Removing package private String constructor which used to be used by Integer and Long to share the char array with newly created string
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30 * A <tt>CharSequence</tt> is a readable sequence of <code>char</code> values. This
31 * interface provides uniform, read-only access to many different kinds of
32 * <code>char</code> sequences.
33 * A <code>char</code> value represents a character in the <i>Basic
34 * Multilingual Plane (BMP)</i> or a surrogate. Refer to <a
35 * href="Character.html#unicode">Unicode Character Representation</a> for details.
37 * <p> This interface does not refine the general contracts of the {@link
38 * java.lang.Object#equals(java.lang.Object) equals} and {@link
39 * java.lang.Object#hashCode() hashCode} methods. The result of comparing two
40 * objects that implement <tt>CharSequence</tt> is therefore, in general,
41 * undefined. Each object may be implemented by a different class, and there
42 * is no guarantee that each class will be capable of testing its instances
43 * for equality with those of the other. It is therefore inappropriate to use
44 * arbitrary <tt>CharSequence</tt> instances as elements in a set or as keys in
47 * @author Mike McCloskey
52 public interface CharSequence {
55 * Returns the length of this character sequence. The length is the number
56 * of 16-bit <code>char</code>s in the sequence.</p>
58 * @return the number of <code>char</code>s in this sequence
63 * Returns the <code>char</code> value at the specified index. An index ranges from zero
64 * to <tt>length() - 1</tt>. The first <code>char</code> value of the sequence is at
65 * index zero, the next at index one, and so on, as for array
68 * <p>If the <code>char</code> value specified by the index is a
69 * <a href="{@docRoot}/java/lang/Character.html#unicode">surrogate</a>, the surrogate
72 * @param index the index of the <code>char</code> value to be returned
74 * @return the specified <code>char</code> value
76 * @throws IndexOutOfBoundsException
77 * if the <tt>index</tt> argument is negative or not less than
80 char charAt(int index);
83 * Returns a new <code>CharSequence</code> that is a subsequence of this sequence.
84 * The subsequence starts with the <code>char</code> value at the specified index and
85 * ends with the <code>char</code> value at index <tt>end - 1</tt>. The length
86 * (in <code>char</code>s) of the
87 * returned sequence is <tt>end - start</tt>, so if <tt>start == end</tt>
88 * then an empty sequence is returned. </p>
90 * @param start the start index, inclusive
91 * @param end the end index, exclusive
93 * @return the specified subsequence
95 * @throws IndexOutOfBoundsException
96 * if <tt>start</tt> or <tt>end</tt> are negative,
97 * if <tt>end</tt> is greater than <tt>length()</tt>,
98 * or if <tt>start</tt> is greater than <tt>end</tt>
100 CharSequence subSequence(int start, int end);
103 * Returns a string containing the characters in this sequence in the same
104 * order as this sequence. The length of the string will be the length of
105 * this sequence. </p>
107 * @return a string consisting of exactly this sequence of characters
109 public String toString();