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<div class="subTitle">javax.servlet.jsp</div>
<h2 title="Class JspWriter" class="title">Class JspWriter</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>java.io.Writer</li>
<li>
<ul class="inheritance">
<li>javax.servlet.jsp.JspWriter</li>
</ul>
</li>
</ul>
</li>
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd>java.io.Closeable, java.io.Flushable, java.lang.Appendable, java.lang.AutoCloseable</dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../javax/servlet/jsp/tagext/BodyContent.html" title="class in javax.servlet.jsp.tagext">BodyContent</a></dd>
</dl>
<hr>
<br>
<pre>public abstract class <span class="typeNameLabel">JspWriter</span>
extends java.io.Writer</pre>
<div class="block"><p>
The actions and template data in a JSP page is written using the JspWriter
object that is referenced by the implicit variable out which is initialized
automatically using methods in the PageContext object.
<p>
This abstract class emulates some of the functionality found in the
java.io.BufferedWriter and java.io.PrintWriter classes, however it differs in
that it throws java.io.IOException from the print methods while PrintWriter
does not.
<p>
<B>Buffering</B>
<p>
The initial JspWriter object is associated with the PrintWriter object of the
ServletResponse in a way that depends on whether the page is or is not
buffered. If the page is not buffered, output written to this JspWriter
object will be written through to the PrintWriter directly, which will be
created if necessary by invoking the getWriter() method on the response
object. But if the page is buffered, the PrintWriter object will not be
created until the buffer is flushed and operations like setContentType() are
legal. Since this flexibility simplifies programming substantially, buffering
is the default for JSP pages.
<p>
Buffering raises the issue of what to do when the buffer is exceeded. Two
approaches can be taken:
<ul>
<li>Exceeding the buffer is not a fatal error; when the buffer is exceeded,
just flush the output.
<li>Exceeding the buffer is a fatal error; when the buffer is exceeded, raise
an exception.
</ul>
<p>
Both approaches are valid, and thus both are supported in the JSP technology.
The behavior of a page is controlled by the autoFlush attribute, which
defaults to true. In general, JSP pages that need to be sure that correct and
complete data has been sent to their client may want to set autoFlush to
false, with a typical case being that where the client is an application
itself. On the other hand, JSP pages that send data that is meaningful even
when partially constructed may want to set autoFlush to true; such as when
the data is sent for immediate display through a browser. Each application
will need to consider their specific needs.
<p>
An alternative considered was to make the buffer size unbounded; but, this
had the disadvantage that runaway computations would consume an unbounded
amount of resources.
<p>
The "out" implicit variable of a JSP implementation class is of this type. If
the page directive selects autoflush="true" then all the I/O operations on
this class shall automatically flush the contents of the buffer if an
overflow condition would result if the current operation were performed
without a flush. If autoflush="false" then all the I/O operations on this
class shall throw an IOException if performing the current operation would
result in a buffer overflow condition.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><code>Writer</code>,
<code>BufferedWriter</code>,
<code>PrintWriter</code></dd>
</dl>
</li>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd"> </span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#autoFlush">autoFlush</a></span></code>
<div class="block">Whether the JspWriter is autoflushing.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#bufferSize">bufferSize</a></span></code>
<div class="block">The size of the buffer used by the JspWriter.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#DEFAULT_BUFFER">DEFAULT_BUFFER</a></span></code>
<div class="block">Constant indicating that the Writer is buffered and is using the
implementation default buffer size.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#NO_BUFFER">NO_BUFFER</a></span></code>
<div class="block">Constant indicating that the Writer is not buffering output.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#UNBOUNDED_BUFFER">UNBOUNDED_BUFFER</a></span></code>
<div class="block">Constant indicating that the Writer is buffered and is unbounded; this is
used in BodyContent.</div>
</td>
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<h3>Fields inherited from class java.io.Writer</h3>
<code>lock</code></li>
</ul>
</li>
</ul>
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<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#JspWriter-int-boolean-">JspWriter</a></span>(int bufferSize,
boolean autoFlush)</code>
<div class="block">Protected constructor.</div>
</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption>
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<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#clear--">clear</a></span>()</code>
<div class="block">Clear the contents of the buffer.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#clearBuffer--">clearBuffer</a></span>()</code>
<div class="block">Clears the current contents of the buffer.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#close--">close</a></span>()</code>
<div class="block">Close the stream, flushing it first.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#flush--">flush</a></span>()</code>
<div class="block">Flush the stream.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#getBufferSize--">getBufferSize</a></span>()</code>
<div class="block">This method returns the size of the buffer used by the JspWriter.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>abstract int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#getRemaining--">getRemaining</a></span>()</code>
<div class="block">This method returns the number of unused bytes in the buffer.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#isAutoFlush--">isAutoFlush</a></span>()</code>
<div class="block">This method indicates whether the JspWriter is autoFlushing.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#newLine--">newLine</a></span>()</code>
<div class="block">Write a line separator.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#print-boolean-">print</a></span>(boolean b)</code>
<div class="block">Print a boolean value.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#print-char-">print</a></span>(char c)</code>
<div class="block">Print a character.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#print-char:A-">print</a></span>(char[] s)</code>
<div class="block">Print an array of characters.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#print-double-">print</a></span>(double d)</code>
<div class="block">Print a double-precision floating-point number.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#print-float-">print</a></span>(float f)</code>
<div class="block">Print a floating-point number.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#print-int-">print</a></span>(int i)</code>
<div class="block">Print an integer.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#print-long-">print</a></span>(long l)</code>
<div class="block">Print a long integer.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#print-java.lang.Object-">print</a></span>(java.lang.Object obj)</code>
<div class="block">Print an object.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#print-java.lang.String-">print</a></span>(java.lang.String s)</code>
<div class="block">Print a string.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#println--">println</a></span>()</code>
<div class="block">Terminate the current line by writing the line separator string.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#println-boolean-">println</a></span>(boolean x)</code>
<div class="block">Print a boolean value and then terminate the line.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#println-char-">println</a></span>(char x)</code>
<div class="block">Print a character and then terminate the line.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#println-char:A-">println</a></span>(char[] x)</code>
<div class="block">Print an array of characters and then terminate the line.</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#println-double-">println</a></span>(double x)</code>
<div class="block">Print a double-precision floating-point number and then terminate the
line.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#println-float-">println</a></span>(float x)</code>
<div class="block">Print a floating-point number and then terminate the line.</div>
</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#println-int-">println</a></span>(int x)</code>
<div class="block">Print an integer and then terminate the line.</div>
</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#println-long-">println</a></span>(long x)</code>
<div class="block">Print a long integer and then terminate the line.</div>
</td>
</tr>
<tr id="i25" class="rowColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#println-java.lang.Object-">println</a></span>(java.lang.Object x)</code>
<div class="block">Print an Object and then terminate the line.</div>
</td>
</tr>
<tr id="i26" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspWriter.html#println-java.lang.String-">println</a></span>(java.lang.String x)</code>
<div class="block">Print a String and then terminate the line.</div>
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<pre>public static final int NO_BUFFER</pre>
<div class="block">Constant indicating that the Writer is not buffering output.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.jsp.JspWriter.NO_BUFFER">Constant Field Values</a></dd>
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<pre>public static final int DEFAULT_BUFFER</pre>
<div class="block">Constant indicating that the Writer is buffered and is using the
implementation default buffer size.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.jsp.JspWriter.DEFAULT_BUFFER">Constant Field Values</a></dd>
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<pre>public static final int UNBOUNDED_BUFFER</pre>
<div class="block">Constant indicating that the Writer is buffered and is unbounded; this is
used in BodyContent.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../constant-values.html#javax.servlet.jsp.JspWriter.UNBOUNDED_BUFFER">Constant Field Values</a></dd>
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<pre>protected int bufferSize</pre>
<div class="block">The size of the buffer used by the JspWriter.</div>
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<pre>protected boolean autoFlush</pre>
<div class="block">Whether the JspWriter is autoflushing.</div>
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<div class="block">Protected constructor.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bufferSize</code> - the size of the buffer to be used by the JspWriter</dd>
<dd><code>autoFlush</code> - whether the JspWriter should be autoflushing</dd>
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<pre>public abstract void newLine()
throws java.io.IOException</pre>
<div class="block">Write a line separator. The line separator string is defined by the
system property <tt>line.separator</tt>, and is not necessarily a single
newline ('\n') character.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an I/O error occurs</dd>
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is written to the JspWriter's buffer or, if no buffer is used, directly
to the underlying writer.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>b</code> - The <code>boolean</code> to be printed</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<div class="block">Print a character. The character is written to the JspWriter's buffer or,
if no buffer is used, directly to the underlying writer.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>c</code> - The <code>char</code> to be printed</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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throws java.io.IOException</pre>
<div class="block">Print an integer. The string produced by <code><code>String.valueOf(int)</code></code>
is written to the JspWriter's buffer or, if no buffer is used, directly
to the underlying writer.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>i</code> - The <code>int</code> to be printed</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><code>Integer.toString(int)</code></dd>
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throws java.io.IOException</pre>
<div class="block">Print a long integer. The string produced by <code><code>String.valueOf(long)</code></code>
is written to the JspWriter's buffer or, if no buffer is used, directly
to the underlying writer.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>l</code> - The <code>long</code> to be printed</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><code>Long.toString(long)</code></dd>
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<pre>public abstract void print(float f)
throws java.io.IOException</pre>
<div class="block">Print a floating-point number. The string produced by <code><code>String.valueOf(float)</code></code>
is written to the JspWriter's buffer or, if no buffer is used, directly
to the underlying writer.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>f</code> - The <code>float</code> to be printed</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><code>Float.toString(float)</code></dd>
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<pre>public abstract void print(double d)
throws java.io.IOException</pre>
<div class="block">Print a double-precision floating-point number. The string produced by
<code><code>String.valueOf(double)</code></code> is written to the
JspWriter's buffer or, if no buffer is used, directly to the underlying
writer.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>d</code> - The <code>double</code> to be printed</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><code>Double.toString(double)</code></dd>
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throws java.io.IOException</pre>
<div class="block">Print an array of characters. The characters are written to the
JspWriter's buffer or, if no buffer is used, directly to the underlying
writer.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>s</code> - The array of chars to be printed</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.lang.NullPointerException</code> - If <code>s</code> is <code>null</code></dd>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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throws java.io.IOException</pre>
<div class="block">Print a string. If the argument is <code>null</code> then the string
<code>"null"</code> is printed. Otherwise, the string's characters are
written to the JspWriter's buffer or, if no buffer is used, directly to
the underlying writer.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>s</code> - The <code>String</code> to be printed</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<pre>public abstract void print(java.lang.Object obj)
throws java.io.IOException</pre>
<div class="block">Print an object. The string produced by the <code><code>String.valueOf(Object)</code></code>
method is written to the JspWriter's buffer or, if no buffer is used,
directly to the underlying writer.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>obj</code> - The <code>Object</code> to be printed</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><code>Object.toString()</code></dd>
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<pre>public abstract void println()
throws java.io.IOException</pre>
<div class="block">Terminate the current line by writing the line separator string. The line
separator string is defined by the system property
<code>line.separator</code>, and is not necessarily a single newline
character (<code>'\n'</code>).</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<pre>public abstract void println(boolean x)
throws java.io.IOException</pre>
<div class="block">Print a boolean value and then terminate the line. This method behaves as
though it invokes <code><a href="../../../javax/servlet/jsp/JspWriter.html#print-boolean-"><code>print(boolean)</code></a></code> and then
<code><a href="../../../javax/servlet/jsp/JspWriter.html#println--"><code>println()</code></a></code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>x</code> - the boolean to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<pre>public abstract void println(char x)
throws java.io.IOException</pre>
<div class="block">Print a character and then terminate the line. This method behaves as
though it invokes <code><a href="../../../javax/servlet/jsp/JspWriter.html#print-char-"><code>print(char)</code></a></code> and then <code><a href="../../../javax/servlet/jsp/JspWriter.html#println--"><code>println()</code></a></code>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>x</code> - the char to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<pre>public abstract void println(int x)
throws java.io.IOException</pre>
<div class="block">Print an integer and then terminate the line. This method behaves as
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>x</code> - the int to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<pre>public abstract void println(long x)
throws java.io.IOException</pre>
<div class="block">Print a long integer and then terminate the line. This method behaves as
though it invokes <code><a href="../../../javax/servlet/jsp/JspWriter.html#print-long-"><code>print(long)</code></a></code> and then
<code><a href="../../../javax/servlet/jsp/JspWriter.html#println--"><code>println()</code></a></code>.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>x</code> - the long to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<div class="block">Print a floating-point number and then terminate the line. This method
behaves as though it invokes <code><a href="../../../javax/servlet/jsp/JspWriter.html#print-float-"><code>print(float)</code></a></code> and then
<code><a href="../../../javax/servlet/jsp/JspWriter.html#println--"><code>println()</code></a></code>.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>x</code> - the float to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<pre>public abstract void println(double x)
throws java.io.IOException</pre>
<div class="block">Print a double-precision floating-point number and then terminate the
line. This method behaves as though it invokes <code><a href="../../../javax/servlet/jsp/JspWriter.html#print-double-"><code>print(double)</code></a></code> and
then <code><a href="../../../javax/servlet/jsp/JspWriter.html#println--"><code>println()</code></a></code>.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>x</code> - the double to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<pre>public abstract void println(char[] x)
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<div class="block">Print an array of characters and then terminate the line. This method
behaves as though it invokes <code>print(char[])</code> and then
<code>println()</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>x</code> - the char[] to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<div class="block">Print a String and then terminate the line. This method behaves as though
it invokes <code><a href="../../../javax/servlet/jsp/JspWriter.html#print-java.lang.String-"><code>print(String)</code></a></code> and then
<code><a href="../../../javax/servlet/jsp/JspWriter.html#println--"><code>println()</code></a></code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>x</code> - the String to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<pre>public abstract void println(java.lang.Object x)
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<div class="block">Print an Object and then terminate the line. This method behaves as
though it invokes <code><a href="../../../javax/servlet/jsp/JspWriter.html#print-java.lang.Object-"><code>print(Object)</code></a></code> and then
<code><a href="../../../javax/servlet/jsp/JspWriter.html#println--"><code>println()</code></a></code>.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>x</code> - the Object to write</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an error occurred while writing</dd>
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<pre>public abstract void clear()
throws java.io.IOException</pre>
<div class="block">Clear the contents of the buffer. If the buffer has been already been
flushed then the clear operation shall throw an IOException to signal the
fact that some data has already been irrevocably written to the client
response stream.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an I/O error occurs</dd>
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<pre>public abstract void clearBuffer()
throws java.io.IOException</pre>
<div class="block">Clears the current contents of the buffer. Unlike clear(), this method
will not throw an IOException if the buffer has already been flushed. It
merely clears the current content of the buffer and returns.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an I/O error occurs</dd>
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<pre>public abstract void flush()
throws java.io.IOException</pre>
<div class="block">Flush the stream. If the stream has saved any characters from the various
write() methods in a buffer, write them immediately to their intended
destination. Then, if that destination is another character or byte
stream, flush it. Thus one flush() invocation will flush all the buffers
in a chain of Writers and OutputStreams.
<p>
The method may be invoked indirectly if the buffer size is exceeded.
<p>
Once a stream has been closed, further write() or flush() invocations
will cause an IOException to be thrown.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>flush</code> in interface <code>java.io.Flushable</code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>flush</code> in class <code>java.io.Writer</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an I/O error occurs</dd>
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<h4>close</h4>
<pre>public abstract void close()
throws java.io.IOException</pre>
<div class="block">Close the stream, flushing it first.
<p>
This method needs not be invoked explicitly for the initial JspWriter as
the code generated by the JSP container will automatically include a call
to close().
<p>
Closing a previously-closed stream, unlike flush(), has no effect.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>close</code> in interface <code>java.io.Closeable</code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>close</code> in interface <code>java.lang.AutoCloseable</code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>close</code> in class <code>java.io.Writer</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an I/O error occurs</dd>
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<pre>public int getBufferSize()</pre>
<div class="block">This method returns the size of the buffer used by the JspWriter.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>the size of the buffer in bytes, or 0 is unbuffered.</dd>
</dl>
</li>
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<h4>getRemaining</h4>
<pre>public abstract int getRemaining()</pre>
<div class="block">This method returns the number of unused bytes in the buffer.</div>
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<pre>public boolean isAutoFlush()</pre>
<div class="block">This method indicates whether the JspWriter is autoFlushing.</div>
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buffer overflow conditions</dd>
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