public JspWriterImpl() 
{
    
        super( Constants.DEFAULT_BUFFER_SIZE, true );
}

 public JspWriterImpl(ServletResponse response) 
{
        this(response, Constants.DEFAULT_BUFFER_SIZE, true);
}

Create a buffered character-output stream that uses a default-sized output buffer.

Parameters:

response - A Servlet Response

 public JspWriterImpl(ServletResponse response,
    int sz,
    boolean autoFlush) 
{
        super(sz, autoFlush);
        if (sz <  0)
            throw new IllegalArgumentException("Buffer size < = 0");
        this.response = response;
        cb = sz == 0 ? null : new char[sz];
        nextChar = 0;
}

Create a new buffered character-output stream that uses an output buffer of the given size.

Parameters:

response - A Servlet Response

sz - Output-buffer size, a positive integer

Throws:

IllegalArgumentException - If sz is <= 0

exception: IllegalArgumentException - If sz is <= 0

 public final  void clear() throws IOException 
{
        if ((bufferSize == 0) && (out != null))
            // clear() is illegal after any unbuffered output (JSP.5.5)
            throw new IllegalStateException(
                    getLocalizeMessage("jsp.error.ise_on_clear"));
        if (flushed)
            throw new IOException(
                    getLocalizeMessage("jsp.error.attempt_to_clear_flushed_buffer"));
        ensureOpen();
        nextChar = 0;
}

Discard the output buffer.

 public  void clearBuffer() throws IOException 
{
        if (bufferSize == 0)
            throw new IllegalStateException(
                    getLocalizeMessage("jsp.error.ise_on_clear"));
        ensureOpen();
        nextChar = 0;
}

 public  void close() throws IOException 
{
        if (response == null || closed)
            // multiple calls to close is OK
            return;
        flush();
        if (out != null)
            out.close();
        out = null;
        closed = true;
}

Close the stream.

 public  void flush() throws IOException 
{
        flushBuffer();
        if (out != null) {
            out.flush();
        }
}

Flush the stream.

 protected final  void flushBuffer() throws IOException 
{
        if (bufferSize == 0)
            return;
        flushed = true;
        ensureOpen();
        if (nextChar == 0)
            return;
        initOut();
        out.write(cb, 0, nextChar);
        nextChar = 0;
}

Flush the output buffer to the underlying character stream, without flushing the stream itself. This method is non-private only so that it may be invoked by PrintStream.

 public int getRemaining() 
{
        return bufferSize - nextChar;
}

  void init(ServletResponse response,
    int sz,
    boolean autoFlush) 
{
        this.response= response;
        if( sz  > 0 && ( cb == null || sz  > cb.length ) )
            cb=new char[sz];
        nextChar = 0;
        this.autoFlush=autoFlush;
        this.bufferSize=sz;
}

 public  void newLine() throws IOException 
{
    
        write(lineSeparator);
}

Write a line separator. The line separator string is defined by the system property line.separator, and is not necessarily a single newline ('\n') character.

 public  void print(boolean b) throws IOException 
{
        write(b ? "true" : "false");
}

Print a boolean value. The string produced by java.lang.String#valueOf(boolean) is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the #write(int) method.

 public  void print(char c) throws IOException 
{
        write(String.valueOf(c));
}

Print a character. The character is translated into one or more bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the #write(int) method.

 public  void print(int i) throws IOException 
{
        write(String.valueOf(i));
}

Print an integer. The string produced by java.lang.String#valueOf(int) is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the #write(int) method.

 public  void print(long l) throws IOException 
{
        write(String.valueOf(l));
}

Print a long integer. The string produced by java.lang.String#valueOf(long) is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the #write(int) method.

 public  void print(float f) throws IOException 
{
        write(String.valueOf(f));
}

Print a floating-point number. The string produced by java.lang.String#valueOf(float) is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the #write(int) method.

 public  void print(double d) throws IOException 
{
        write(String.valueOf(d));
}

Print a double-precision floating-point number. The string produced by java.lang.String#valueOf(double) is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the #write(int) method.

 public  void print(char[] s) throws IOException 
{
        write(s);
}

Print an array of characters. The characters are converted into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the #write(int) method.

 public  void print(String s) throws IOException 
{
        if (s == null) {
            s = "null";
        }
        write(s);
}

Print a string. If the argument is null then the string "null" is printed. Otherwise, the string's characters are converted into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the #write(int) method.

 public  void print(Object obj) throws IOException 
{
        write(String.valueOf(obj));
}

Print an object. The string produced by the java.lang.String#valueOf(Object) method is translated into bytes according to the platform's default character encoding, and these bytes are written in exactly the manner of the #write(int) method.

 public  void println() throws IOException 
{
        newLine();
}

Terminate the current line by writing the line separator string. The line separator string is defined by the system property line.separator, and is not necessarily a single newline character ('\n'). Need to change this from PrintWriter because the default println() writes to the sink directly instead of through the write method...

 public  void println(boolean x) throws IOException 
{
        print(x);
        println();
}

Print a boolean value and then terminate the line. This method behaves as though it invokes #print(boolean) and then #println() .

 public  void println(char x) throws IOException 
{
        print(x);
        println();
}

Print a character and then terminate the line. This method behaves as though it invokes #print(char) and then #println() .

 public  void println(int x) throws IOException 
{
        print(x);
        println();
}

Print an integer and then terminate the line. This method behaves as though it invokes #print(int) and then #println() .

 public  void println(long x) throws IOException 
{
        print(x);
        println();
}

Print a long integer and then terminate the line. This method behaves as though it invokes #print(long) and then #println() .

 public  void println(float x) throws IOException 
{
        print(x);
        println();
}

Print a floating-point number and then terminate the line. This method behaves as though it invokes #print(float) and then #println() .

 public  void println(double x) throws IOException 
{
        print(x);
        println();
}

Print a double-precision floating-point number and then terminate the line. This method behaves as though it invokes #print(double) and then #println() .

 public  void println(char[] x) throws IOException 
{
        print(x);
        println();
}

Print an array of characters and then terminate the line. This method behaves as though it invokes #print(char[]) and then #println() .

 public  void println(String x) throws IOException 
{
        print(x);
        println();
}

Print a String and then terminate the line. This method behaves as though it invokes #print(String) and then #println() .

 public  void println(Object x) throws IOException 
{
        print(x);
        println();
}

Print an Object and then terminate the line. This method behaves as though it invokes #print(Object) and then #println() .

  void recycle() 
{
        flushed = false;
        closed = false;
        out = null;
        nextChar = 0;
        response = null;
}

Package-level access

 public  void write(int c) throws IOException 
{
        ensureOpen();
        if (bufferSize == 0) {
            initOut();
            out.write(c);
        }
        else {
            if (nextChar  >= bufferSize)
                if (autoFlush)
                    flushBuffer();
                else
                    bufferOverflow();
            cb[nextChar++] = (char) c;
        }
}

Write a single character.

 public  void write(char[] buf) throws IOException 
{
        write(buf, 0, buf.length);
}

Write an array of characters. This method cannot be inherited from the Writer class because it must suppress I/O exceptions.

 public  void write(String s) throws IOException 
{
        // Simple fix for Bugzilla 35410
        // Calling the other write function so as to init the buffer anyways
        if(s == null) {
            write(s, 0, 0);
        } else {
            write(s, 0, s.length());
        }
}

Write a string. This method cannot be inherited from the Writer class because it must suppress I/O exceptions.

 public  void write(char[] cbuf,
    int off,
    int len) throws IOException 
{
        ensureOpen();
        if (bufferSize == 0) {
            initOut();
            out.write(cbuf, off, len);
            return;
        }
        if ((off <  0) || (off  > cbuf.length) || (len <  0) ||
                ((off + len)  > cbuf.length) || ((off + len) <  0)) {
            throw new IndexOutOfBoundsException();
        } else if (len == 0) {
            return;
        } 
        if (len  >= bufferSize) {
            /* If the request length exceeds the size of the output buffer,
             flush the buffer and then write the data directly.  In this
             way buffered streams will cascade harmlessly. */
            if (autoFlush)
                flushBuffer();
            else
                bufferOverflow();
            initOut();
            out.write(cbuf, off, len);
            return;
        }
        int b = off, t = off + len;
        while (b <  t) {
            int d = min(bufferSize - nextChar, t - b);
            System.arraycopy(cbuf, b, cb, nextChar, d);
            b += d;
            nextChar += d;
            if (nextChar  >= bufferSize) 
                if (autoFlush)
                    flushBuffer();
                else
                    bufferOverflow();
        }
}

Write a portion of an array of characters.

Ordinarily this method stores characters from the given array into this stream's buffer, flushing the buffer to the underlying stream as needed. If the requested length is at least as large as the buffer, however, then this method will flush the buffer and write the characters directly to the underlying stream. Thus redundant DiscardableBufferedWriters will not copy data unnecessarily.

 public  void write(String s,
    int off,
    int len) throws IOException 
{
        ensureOpen();
        if (bufferSize == 0) {
            initOut();
            out.write(s, off, len);
            return;
        }
        int b = off, t = off + len;
        while (b <  t) {
            int d = min(bufferSize - nextChar, t - b);
            s.getChars(b, b + d, cb, nextChar);
            b += d;
            nextChar += d;
            if (nextChar  >= bufferSize) 
                if (autoFlush)
                    flushBuffer();
                else
                    bufferOverflow();
        }
}

Write a portion of a String.