stringbuffer.html
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</TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> char</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#charAt(int)">charAt</A></B>(int index)</CODE><BR> The specified character of the sequence currently represented by the string buffer, as indicated by the <code>index</code> argument, is returned.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#delete(int, int)">delete</A></B>(int start, int end)</CODE><BR> Removes the characters in a substring of this <code>StringBuffer</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#deleteCharAt(int)">deleteCharAt</A></B>(int index)</CODE><BR> Removes the character at the specified position in this <code>StringBuffer</code> (shortening the <code>StringBuffer</code> by one character).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#ensureCapacity(int)">ensureCapacity</A></B>(int minimumCapacity)</CODE><BR> Ensures that the capacity of the buffer is at least equal to the specified minimum.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#getChars(int, int, char[], int)">getChars</A></B>(int srcBegin, int srcEnd, char[] dst, int dstBegin)</CODE><BR> Characters are copied from this string buffer into the destination character array <code>dst</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#insert(int, boolean)">insert</A></B>(int offset, boolean b)</CODE><BR> Inserts the string representation of the <code>boolean</code> argument into this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#insert(int, char)">insert</A></B>(int offset, char c)</CODE><BR> Inserts the string representation of the <code>char</code> argument into this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#insert(int, char[])">insert</A></B>(int offset, char[] str)</CODE><BR> Inserts the string representation of the <code>char</code> array argument into this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#insert(int, char[], int, int)">insert</A></B>(int index, char[] str, int offset, int len)</CODE><BR> Inserts the string representation of a subarray of the <code>str</code> array argument into this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#insert(int, double)">insert</A></B>(int offset, double d)</CODE><BR> Inserts the string representation of the <code>double</code> argument into this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#insert(int, float)">insert</A></B>(int offset, float f)</CODE><BR> Inserts the string representation of the <code>float</code> argument into this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#insert(int, int)">insert</A></B>(int offset, int i)</CODE><BR> Inserts the string representation of the second <code>int</code> argument into this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#insert(int, long)">insert</A></B>(int offset, long l)</CODE><BR> Inserts the string representation of the <code>long</code> argument into this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#insert(int, java.lang.Object)">insert</A></B>(int offset, <A HREF="../../java/lang/Object.html">Object</A> obj)</CODE><BR> Inserts the string representation of the <code>Object</code> argument into this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#insert(int, java.lang.String)">insert</A></B>(int offset, <A HREF="../../java/lang/String.html">String</A> str)</CODE><BR> Inserts the string into this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#length()">length</A></B>()</CODE><BR> Returns the length (character count) of this string buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#replace(int, int, java.lang.String)">replace</A></B>(int start, int end, <A HREF="../../java/lang/String.html">String</A> str)</CODE><BR> Replaces the characters in a substring of this <code>StringBuffer</code> with characters in the specified <code>String</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/StringBuffer.html">StringBuffer</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#reverse()">reverse</A></B>()</CODE><BR> The character sequence contained in this string buffer is replaced by the reverse of the sequence.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#setCharAt(int, char)">setCharAt</A></B>(int index, char ch)</CODE><BR> The character at the specified index of this string buffer is set to <code>ch</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#setLength(int)">setLength</A></B>(int newLength)</CODE><BR> Sets the length of this String buffer.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#substring(int)">substring</A></B>(int start)</CODE><BR> Returns a new <code>String</code> that contains a subsequence of characters currently contained in this <code>StringBuffer</code>.The substring begins at the specified index and extends to the end of the <code>StringBuffer</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#substring(int, int)">substring</A></B>(int start, int end)</CODE><BR> Returns a new <code>String</code> that contains a subsequence of characters currently contained in this <code>StringBuffer</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/StringBuffer.html#toString()">toString</A></B>()</CODE><BR> Converts to a string representing the data in this string buffer.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.<A HREF="../../java/lang/Object.html">Object</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../java/lang/Object.html#clone()">clone</A>, <A HREF="../../java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../java/lang/Object.html#finalize()">finalize</A>, <A HREF="../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../java/lang/Object.html#wait(long, int)">wait</A></CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="StringBuffer()"><!-- --></A><H3>StringBuffer</H3><PRE>public <B>StringBuffer</B>()</PRE><DL><DD>Constructs a string buffer with no characters in it and an initial capacity of 16 characters.</DL><HR><A NAME="StringBuffer(int)"><!-- --></A><H3>StringBuffer</H3><PRE>public <B>StringBuffer</B>(int length)</PRE><DL><DD>Constructs a string buffer with no characters in it and an initial capacity specified by the <code>length</code> argument.<DD><DL><DT><B>Parameters:</B><DD><CODE>length</CODE> - the initial capacity.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/lang/NegativeArraySizeException.html">NegativeArraySizeException</A></CODE> - if the <code>length</code> argument is less than <code>0</code>.</DL></DD></DL><HR><A NAME="StringBuffer(java.lang.String)"><!-- --></A><H3>StringBuffer</H3><PRE>⌨️ 快捷键说明
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