PrintStream
  public
  
  
  
  class
  PrintStream
  
  
  
  
  
  
  
    extends FilterOutputStream
  
  
  
  
  
      implements
      
        Appendable, 
      
        Closeable
      
  
  
| java.lang.Object | |||
| ↳ | java.io.OutputStream | ||
| ↳ | java.io.FilterOutputStream | ||
| ↳ | java.io.PrintStream | ||
A PrintStream adds functionality to another output stream,
 namely the ability to print representations of various data values
 conveniently.  Two other features are provided as well.  Unlike other output
 streams, a PrintStream never throws an
 IOException; instead, exceptional situations merely set an
 internal flag that can be tested via the checkError method.
 Optionally, a PrintStream can be created so as to flush
 automatically; this means that the flush method of the underlying
 output stream is automatically invoked after a byte array is written, one
 of the println methods is invoked, or a newline character or byte
 ('\n') is written.
 
 All characters printed by a PrintStream are converted into
 bytes using the given encoding or charset, or the platform's default
 character encoding if not specified.
 The PrintWriter class should be used in situations that require
 writing characters rather than bytes.
 
This class always replaces malformed and unmappable character sequences with the charset's default replacement string. The CharsetEncoder class should be used when more control over the encoding process is required.
Summary
| Inherited fields | 
|---|
| Public constructors | |
|---|---|
| 
      PrintStream(File file)
      Creates a new print stream, without automatic line flushing, with the specified file. | |
| 
      PrintStream(File file, String csn)
      Creates a new print stream, without automatic line flushing, with the specified file and charset. | |
| 
      PrintStream(File file, Charset charset)
      Creates a new print stream, without automatic line flushing, with the specified file and charset. | |
| 
      PrintStream(OutputStream out)
      Creates a new print stream, without automatic line flushing, with the specified OutputStream. | |
| 
      PrintStream(OutputStream out, boolean autoFlush)
      Creates a new print stream, with the specified OutputStream and line flushing. | |
| 
      PrintStream(OutputStream out, boolean autoFlush, String encoding)
      Creates a new print stream, with the specified OutputStream, line flushing, and character encoding. | |
| 
      PrintStream(OutputStream out, boolean autoFlush, Charset charset)
      Creates a new print stream, with the specified OutputStream, line flushing and charset. | |
| 
      PrintStream(String fileName)
      Creates a new print stream, without automatic line flushing, with the specified file name. | |
| 
      PrintStream(String fileName, String csn)
      Creates a new print stream, without automatic line flushing, with the specified file name and charset. | |
| 
      PrintStream(String fileName, Charset charset)
      Creates a new print stream, without automatic line flushing, with the specified file name and charset. | |
| Public methods | |
|---|---|
| 
        
        
        
        
        
        PrintStream | 
      append(char c)
      Appends the specified character to this output stream. | 
| 
        
        
        
        
        
        PrintStream | 
      append(CharSequence csq, int start, int end)
      Appends a subsequence of the specified character sequence to this output stream. | 
| 
        
        
        
        
        
        PrintStream | 
      append(CharSequence csq)
      Appends the specified character sequence to this output stream. | 
| 
        
        
        
        
        
        boolean | 
      checkError()
      Flushes the stream and checks its error state. | 
| 
        
        
        
        
        
        void | 
      close()
      Closes the stream. | 
| 
        
        
        
        
        
        void | 
      flush()
      Flushes the stream. | 
| 
        
        
        
        
        
        PrintStream | 
      format(String format, Object... args)
      Writes a formatted string to this output stream using the specified format string and arguments. | 
| 
        
        
        
        
        
        PrintStream | 
      format(Locale l, String format, Object... args)
      Writes a formatted string to this output stream using the specified format string and arguments. | 
| 
        
        
        
        
        
        void | 
      print(double d)
      Prints a double-precision floating-point number. | 
| 
        
        
        
        
        
        void | 
      print(int i)
      Prints an integer. | 
| 
        
        
        
        
        
        void | 
      print(boolean b)
      Prints a boolean value. | 
| 
        
        
        
        
        
        void | 
      print(char c)
      Prints a character. | 
| 
        
        
        
        
        
        void | 
      print(long l)
      Prints a long integer. | 
| 
        
        
        
        
        
        void | 
      print(float f)
      Prints a floating-point number. | 
| 
        
        
        
        
        
        void | 
      print(String s)
      Prints a string. | 
| 
        
        
        
        
        
        void | 
      print(Object obj)
      Prints an object. | 
| 
        
        
        
        
        
        void | 
      print(char[] s)
      Prints an array of characters. | 
| 
        
        
        
        
        
        PrintStream | 
      printf(Locale l, String format, Object... args)
      A convenience method to write a formatted string to this output stream using the specified format string and arguments. | 
| 
        
        
        
        
        
        PrintStream | 
      printf(String format, Object... args)
      A convenience method to write a formatted string to this output stream using the specified format string and arguments. | 
| 
        
        
        
        
        
        void | 
      println(Object x)
      Prints an Object and then terminate the line. | 
| 
        
        
        
        
        
        void | 
      println(char x)
      Prints a character and then terminate the line. | 
| 
        
        
        
        
        
        void | 
      println(boolean x)
      Prints a boolean and then terminate the line. | 
| 
        
        
        
        
        
        void | 
      println(long x)
      Prints a long and then terminate the line. | 
| 
        
        
        
        
        
        void | 
      println()
      Terminates the current line by writing the line separator string. | 
| 
        
        
        
        
        
        void | 
      println(int x)
      Prints an integer and then terminate the line. | 
| 
        
        
        
        
        
        void | 
      println(String x)
      Prints a String and then terminate the line. | 
| 
        
        
        
        
        
        void | 
      println(char[] x)
      Prints an array of characters and then terminate the line. | 
| 
        
        
        
        
        
        void | 
      println(float x)
      Prints a float and then terminate the line. | 
| 
        
        
        
        
        
        void | 
      println(double x)
      Prints a double and then terminate the line. | 
| 
        
        
        
        
        
        void | 
      write(byte[] buf)
      Writes all bytes from the specified byte array to this stream. | 
| 
        
        
        
        
        
        void | 
      write(byte[] buf, int off, int len)
      Writes  | 
| 
        
        
        
        
        
        void | 
      write(int b)
      Writes the specified byte to this stream. | 
| 
        
        
        
        
        
        void | 
      writeBytes(byte[] buf)
      Writes all bytes from the specified byte array to this stream. | 
| Protected methods | |
|---|---|
| 
        
        
        
        
        
        void | 
      clearError()
      Clears the internal error state of this stream. | 
| 
        
        
        
        
        
        void | 
      setError()
      Sets the error state of the stream to  | 
| Inherited methods | |
|---|---|
Public constructors
PrintStream
public PrintStream (File file)
Creates a new print stream, without automatic line flushing, with the
 specified file.  This convenience constructor creates the necessary
 intermediate OutputStreamWriter,
 which will encode characters using the default charset for this
 instance of the Java virtual machine.
| Parameters | |
|---|---|
| file | File: The file to use as the destination of this print stream.  If the
         file exists, then it will be truncated to zero size; otherwise,
         a new file will be created.  The output will be written to the
         file and is buffered. | 
| Throws | |
|---|---|
| FileNotFoundException | If the given file object does not denote an existing, writable regular file and a new regular file of that name cannot be created, or if some other error occurs while opening or creating the file | 
| SecurityException | If a security manager is present and checkWrite(file.getPath())denies write access to the file | 
PrintStream
public PrintStream (File file, String csn)
Creates a new print stream, without automatic line flushing, with the
 specified file and charset.  This convenience constructor creates
 the necessary intermediate OutputStreamWriter, which will encode characters using the provided
 charset.
| Parameters | |
|---|---|
| file | File: The file to use as the destination of this print stream.  If the
         file exists, then it will be truncated to zero size; otherwise,
         a new file will be created.  The output will be written to the
         file and is buffered. | 
| csn | String: The name of a supported charset | 
| Throws | |
|---|---|
| FileNotFoundException | If the given file object does not denote an existing, writable regular file and a new regular file of that name cannot be created, or if some other error occurs while opening or creating the file | 
| SecurityException | If a security manager is present and checkWrite(file.getPath())denies write access to the file | 
| UnsupportedEncodingException | If the named charset is not supported | 
PrintStream
public PrintStream (File file, Charset charset)
Creates a new print stream, without automatic line flushing, with the
 specified file and charset.  This convenience constructor creates
 the necessary intermediate OutputStreamWriter, which will encode characters using the provided
 charset.
| Parameters | |
|---|---|
| file | File: The file to use as the destination of this print stream.  If the
         file exists, then it will be truncated to zero size; otherwise,
         a new file will be created.  The output will be written to the
         file and is buffered. | 
| charset | Charset: A charset | 
| Throws | |
|---|---|
| IOException | if an I/O error occurs while opening or creating the file | 
| SecurityException | If a security manager is present and checkWrite(file.getPath())denies write access to the file | 
PrintStream
public PrintStream (OutputStream out)
Creates a new print stream, without automatic line flushing, with the specified OutputStream. Characters written to the stream are converted to bytes using the platform's default character encoding.
| Parameters | |
|---|---|
| out | OutputStream: The output stream to which values and objects will be
                    printed | 
PrintStream
public PrintStream (OutputStream out, boolean autoFlush)
Creates a new print stream, with the specified OutputStream and line flushing. Characters written to the stream are converted to bytes using the platform's default character encoding.
| Parameters | |
|---|---|
| out | OutputStream: The output stream to which values and objects will be
                    printed | 
| autoFlush | boolean: Whether the output buffer will be flushed
                    whenever a byte array is written, one of theprintlnmethods is invoked, or a newline
                    character or byte ('\n') is written | 
PrintStream
public PrintStream (OutputStream out, boolean autoFlush, String encoding)
Creates a new print stream, with the specified OutputStream, line flushing, and character encoding.
| Parameters | |
|---|---|
| out | OutputStream: The output stream to which values and objects will be
                    printed | 
| autoFlush | boolean: Whether the output buffer will be flushed
                    whenever a byte array is written, one of theprintlnmethods is invoked, or a newline
                    character or byte ('\n') is written | 
| encoding | String: The name of a supported
                    
                    character encoding | 
| Throws | |
|---|---|
| UnsupportedEncodingException | If the named encoding is not supported | 
PrintStream
public PrintStream (OutputStream out, boolean autoFlush, Charset charset)
Creates a new print stream, with the specified OutputStream, line
 flushing and charset.  This convenience constructor creates the necessary
 intermediate OutputStreamWriter,
 which will encode characters using the provided charset.
| Parameters | |
|---|---|
| out | OutputStream: The output stream to which values and objects will be
                    printed | 
| autoFlush | boolean: Whether the output buffer will be flushed
                    whenever a byte array is written, one of theprintlnmethods is invoked, or a newline
                    character or byte ('\n') is written | 
| charset | Charset: A charset | 
PrintStream
public PrintStream (String fileName)
Creates a new print stream, without automatic line flushing, with the
 specified file name.  This convenience constructor creates
 the necessary intermediate OutputStreamWriter, which will encode characters using the
 default charset
 for this instance of the Java virtual machine.
| Parameters | |
|---|---|
| fileName | String: The name of the file to use as the destination of this print
         stream.  If the file exists, then it will be truncated to
         zero size; otherwise, a new file will be created.  The output
         will be written to the file and is buffered. | 
| Throws | |
|---|---|
| FileNotFoundException | If the given file object does not denote an existing, writable regular file and a new regular file of that name cannot be created, or if some other error occurs while opening or creating the file | 
| SecurityException | If a security manager is present and checkWrite(fileName)denies write
          access to the file | 
PrintStream
public PrintStream (String fileName, String csn)
Creates a new print stream, without automatic line flushing, with the
 specified file name and charset.  This convenience constructor creates
 the necessary intermediate OutputStreamWriter, which will encode characters using the provided
 charset.
| Parameters | |
|---|---|
| fileName | String: The name of the file to use as the destination of this print
         stream.  If the file exists, then it will be truncated to
         zero size; otherwise, a new file will be created.  The output
         will be written to the file and is buffered. | 
| csn | String: The name of a supported charset | 
| Throws | |
|---|---|
| FileNotFoundException | If the given file object does not denote an existing, writable regular file and a new regular file of that name cannot be created, or if some other error occurs while opening or creating the file | 
| SecurityException | If a security manager is present and checkWrite(fileName)denies write
          access to the file | 
| UnsupportedEncodingException | If the named charset is not supported | 
PrintStream
public PrintStream (String fileName, Charset charset)
Creates a new print stream, without automatic line flushing, with the
 specified file name and charset.  This convenience constructor creates
 the necessary intermediate OutputStreamWriter, which will encode characters using the provided
 charset.
| Parameters | |
|---|---|
| fileName | String: The name of the file to use as the destination of this print
         stream.  If the file exists, then it will be truncated to
         zero size; otherwise, a new file will be created.  The output
         will be written to the file and is buffered. | 
| charset | Charset: A charset | 
| Throws | |
|---|---|
| IOException | if an I/O error occurs while opening or creating the file | 
| SecurityException | If a security manager is present and checkWrite(fileName)denies write
          access to the file | 
Public methods
append
public PrintStream append (char c)
Appends the specified character to this output stream.
 An invocation of this method of the form out.append(c)
 behaves in exactly the same way as the invocation
 
out.print(c)
 | Parameters | |
|---|---|
| c | char: The 16-bit character to append | 
| Returns | |
|---|---|
| PrintStream | This output stream | 
append
public PrintStream append (CharSequence csq, int start, int end)
Appends a subsequence of the specified character sequence to this output stream.
 An invocation of this method of the form
 out.append(csq, start, end) when
 csq is not null, behaves in
 exactly the same way as the invocation
 
out.print(csq.subSequence(start, end).toString())
 | Parameters | |
|---|---|
| csq | CharSequence: The character sequence from which a subsequence will be
         appended.  Ifcsqisnull, then characters
         will be appended as ifcsqcontained the four
         characters"null". | 
| start | int: The index of the first character in the subsequence | 
| end | int: The index of the character following the last character in the
         subsequence | 
| Returns | |
|---|---|
| PrintStream | This output stream | 
| Throws | |
|---|---|
| IndexOutOfBoundsException | If startorendare negative,startis greater thanend, orendis greater thancsq.length() | 
append
public PrintStream append (CharSequence csq)
Appends the specified character sequence to this output stream.
 An invocation of this method of the form out.append(csq)
 behaves in exactly the same way as the invocation
 
out.print(csq.toString())
  Depending on the specification of toString for the
 character sequence csq, the entire sequence may not be
 appended.  For instance, invoking then toString method of a
 character buffer will return a subsequence whose content depends upon
 the buffer's position and limit.
| Parameters | |
|---|---|
| csq | CharSequence: The character sequence to append.  Ifcsqisnull, then the four characters"null"are
         appended to this output stream. | 
| Returns | |
|---|---|
| PrintStream | This output stream | 
checkError
public boolean checkError ()
Flushes the stream and checks its error state. The internal error state
 is set to true when the underlying output stream throws an
 IOException other than InterruptedIOException,
 and when the setError method is invoked.  If an operation
 on the underlying output stream throws an
 InterruptedIOException, then the PrintStream
 converts the exception back into an interrupt by doing:
 
Thread.currentThread().interrupt();
 | Returns | |
|---|---|
| boolean | trueif and only if this stream has encountered anIOExceptionother thanInterruptedIOException, or thesetErrormethod has been invoked | 
close
public void close ()
Closes the stream. This is done by flushing the stream and then closing the underlying output stream.
See also:
flush
public void flush ()
Flushes the stream. This is done by writing any buffered output bytes to the underlying output stream and then flushing that stream.
See also:
format
public PrintStream format (String format, Object... args)
Writes a formatted string to this output stream using the specified format string and arguments.
 The locale always used is the one returned by Locale.getDefault(Locale.Category) with
 FORMAT category specified,
 regardless of any previous invocations of other formatting methods on
 this object.
| Parameters | |
|---|---|
| format | String: A format string as described in Format string syntax | 
| args | Object: Arguments referenced by the format specifiers in the format
         string.  If there are more arguments than format specifiers, the
         extra arguments are ignored.  The number of arguments is
         variable and may be zero.  The maximum number of arguments is
         limited by the maximum dimension of a Java array as defined by
         The Java Virtual Machine Specification.
         The behaviour on anullargument depends on the conversion. | 
| Returns | |
|---|---|
| PrintStream | This output stream | 
| Throws | |
|---|---|
| IllegalFormatException | If a format string contains an illegal syntax, a format specifier that is incompatible with the given arguments, insufficient arguments given the format string, or other illegal conditions. For specification of all possible formatting errors, see the Details section of the formatter class specification. | 
| NullPointerException | If the formatisnull | 
format
public PrintStream format (Locale l, String format, Object... args)
Writes a formatted string to this output stream using the specified format string and arguments.
| Parameters | |
|---|---|
| l | Locale: The locale to apply during
         formatting.  Iflisnullthen no localization
         is applied. | 
| format | String: A format string as described in Format string syntax | 
| args | Object: Arguments referenced by the format specifiers in the format
         string.  If there are more arguments than format specifiers, the
         extra arguments are ignored.  The number of arguments is
         variable and may be zero.  The maximum number of arguments is
         limited by the maximum dimension of a Java array as defined by
         The Java Virtual Machine Specification.
         The behaviour on anullargument depends on the conversion. | 
| Returns | |
|---|---|
| PrintStream | This output stream | 
| Throws | |
|---|---|
| IllegalFormatException | If a format string contains an illegal syntax, a format specifier that is incompatible with the given arguments, insufficient arguments given the format string, or other illegal conditions. For specification of all possible formatting errors, see the Details section of the formatter class specification. | 
| NullPointerException | If the formatisnull | 
public void print (double d)
Prints a double-precision floating-point number.  The string produced by
 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.
| Parameters | |
|---|---|
| d | double: Thedoubleto be printed | 
See also:
public void print (int i)
Prints an integer.  The string produced by 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.
| Parameters | |
|---|---|
| i | int: Theintto be printed | 
See also:
public void print (boolean b)
Prints a boolean value.  The string produced by 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.
| Parameters | |
|---|---|
| b | boolean: Thebooleanto be printed | 
public void print (char c)
Prints a character.  The character is translated into one or more bytes
 according to the character encoding given to the constructor, or the
 platform's default character encoding if none specified. These bytes
 are written in exactly the manner of the write(int) method.
| Parameters | |
|---|---|
| c | char: Thecharto be printed | 
public void print (long l)
Prints a long integer.  The string produced by 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.
| Parameters | |
|---|---|
| l | long: Thelongto be printed | 
See also:
public void print (float f)
Prints a floating-point number.  The string produced by 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.
| Parameters | |
|---|---|
| f | float: Thefloatto be printed | 
See also:
public void print (String s)
Prints 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 character encoding given to the
 constructor, or the platform's default character encoding if none
 specified. These bytes are written in exactly the manner of the
 write(int) method.
| Parameters | |
|---|---|
| s | String: TheStringto be printed | 
public void print (Object obj)
Prints an object.  The string produced by the 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.
| Parameters | |
|---|---|
| obj | Object: TheObjectto be printed | 
See also:
public void print (char[] s)
Prints an array of characters.  The characters are converted into bytes
 according to the character encoding given to the constructor, or the
 platform's default character encoding if none specified. These bytes
 are written in exactly the manner of the write(int) method.
| Parameters | |
|---|---|
| s | char: The array of chars to be printed | 
| Throws | |
|---|---|
| NullPointerException | If sisnull | 
printf
public PrintStream printf (Locale l, String format, Object... args)
A convenience method to write a formatted string to this output stream using the specified format string and arguments.
 An invocation of this method of the form
 out.printf(l, format, args) behaves
 in exactly the same way as the invocation
 
out.format(l, format, args)
 | Parameters | |
|---|---|
| l | Locale: The locale to apply during
         formatting.  Iflisnullthen no localization
         is applied. | 
| format | String: A format string as described in Format string syntax | 
| args | Object: Arguments referenced by the format specifiers in the format
         string.  If there are more arguments than format specifiers, the
         extra arguments are ignored.  The number of arguments is
         variable and may be zero.  The maximum number of arguments is
         limited by the maximum dimension of a Java array as defined by
         The Java Virtual Machine Specification.
         The behaviour on anullargument depends on the conversion. | 
| Returns | |
|---|---|
| PrintStream | This output stream | 
| Throws | |
|---|---|
| IllegalFormatException | If a format string contains an illegal syntax, a format specifier that is incompatible with the given arguments, insufficient arguments given the format string, or other illegal conditions. For specification of all possible formatting errors, see the Details section of the formatter class specification. | 
| NullPointerException | If the formatisnull | 
printf
public PrintStream printf (String format, Object... args)
A convenience method to write a formatted string to this output stream using the specified format string and arguments.
 An invocation of this method of the form
 out.printf(format, args) behaves
 in exactly the same way as the invocation
 
out.format(format, args)
 | Parameters | |
|---|---|
| format | String: A format string as described in Format string syntax | 
| args | Object: Arguments referenced by the format specifiers in the format
         string.  If there are more arguments than format specifiers, the
         extra arguments are ignored.  The number of arguments is
         variable and may be zero.  The maximum number of arguments is
         limited by the maximum dimension of a Java array as defined by
         The Java Virtual Machine Specification.
         The behaviour on anullargument depends on the conversion. | 
| Returns | |
|---|---|
| PrintStream | This output stream | 
| Throws | |
|---|---|
| IllegalFormatException | If a format string contains an illegal syntax, a format specifier that is incompatible with the given arguments, insufficient arguments given the format string, or other illegal conditions. For specification of all possible formatting errors, see the Details section of the formatter class specification. | 
| NullPointerException | If the formatisnull | 
println
public void println (Object x)
Prints an Object and then terminate the line.  This method calls
 at first String.valueOf(x) to get the printed object's string value,
 then behaves as
 though it invokes print(java.lang.String) and then
 println().
| Parameters | |
|---|---|
| x | Object: TheObjectto be printed. | 
println
public void println (char x)
Prints a character and then terminate the line.  This method behaves as
 though it invokes print(char) and then
 println().
| Parameters | |
|---|---|
| x | char: Thecharto be printed. | 
println
public void println (boolean x)
Prints a boolean and then terminate the line.  This method behaves as
 though it invokes print(boolean) and then
 println().
| Parameters | |
|---|---|
| x | boolean: Thebooleanto be printed | 
println
public void println (long x)
Prints a long and then terminate the line.  This method behaves as
 though it invokes print(long) and then
 println().
| Parameters | |
|---|---|
| x | long: a Thelongto be printed. | 
println
public void println ()
Terminates 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').
println
public void println (int x)
Prints an integer and then terminate the line.  This method behaves as
 though it invokes print(int) and then
 println().
| Parameters | |
|---|---|
| x | int: Theintto be printed. | 
println
public void println (String x)
Prints a String and then terminate the line.  This method behaves as
 though it invokes print(java.lang.String) and then
 println().
| Parameters | |
|---|---|
| x | String: TheStringto be printed. | 
println
public void println (char[] x)
Prints an array of characters and then terminate the line.  This method
 behaves as though it invokes print(char[]) and
 then println().
| Parameters | |
|---|---|
| x | char: an array of chars to print. | 
println
public void println (float x)
Prints a float and then terminate the line.  This method behaves as
 though it invokes print(float) and then
 println().
| Parameters | |
|---|---|
| x | float: Thefloatto be printed. | 
println
public void println (double x)
Prints a double and then terminate the line.  This method behaves as
 though it invokes print(double) and then
 println().
| Parameters | |
|---|---|
| x | double: Thedoubleto be printed. | 
write
public void write (byte[] buf)
Writes all bytes from the specified byte array to this stream. If
 automatic flushing is enabled then the flush method will be
 invoked on the underlying output stream.
 
 Note that the bytes will be written as given; to write characters
 that will be translated according to the platform's default character
 encoding, use the print(char[]) or println(char[])
 methods.
API Note:
- Although declared to throw IOException, this method never actually does so. Instead, like other methods that this class overrides, it sets an internal flag which may be tested via thecheckError()method. To write an array of bytes without having to write acatchblock for theIOException, use eitherwriteBytes(buf)orwrite(buf, 0, buf.length).
Implementation Requirements:
- This method is equivalent to
 this.write(buf, 0, buf.length).
| Parameters | |
|---|---|
| buf | byte: A byte array | 
| Throws | |
|---|---|
| IOException | If an I/O error occurs. | 
write
public void write (byte[] buf, 
                int off, 
                int len)Writes len bytes from the specified byte array starting at
 offset off to this stream.  If automatic flushing is
 enabled then the flush method will be invoked on the underlying
 output stream.
 
 Note that the bytes will be written as given; to write characters
 that will be translated according to the platform's default character
 encoding, use the print(char) or println(char)
 methods.
| Parameters | |
|---|---|
| buf | byte: A byte array | 
| off | int: Offset from which to start taking bytes | 
| len | int: Number of bytes to write | 
write
public void write (int b)
Writes the specified byte to this stream.  If the byte is a newline and
 automatic flushing is enabled then the flush method will be
 invoked on the underlying output stream.
 
 Note that the byte is written as given; to write a character that
 will be translated according to the platform's default character
 encoding, use the print(char) or println(char)
 methods.
| Parameters | |
|---|---|
| b | int: The byte to be written | 
See also:
writeBytes
public void writeBytes (byte[] buf)
Writes all bytes from the specified byte array to this stream.
 If automatic flushing is enabled then the flush method
 will be invoked.
 
 Note that the bytes will be written as given; to write characters
 that will be translated according to the platform's default character
 encoding, use the print(char[]) or println(char[])
 methods.
Implementation Requirements:
- This method is equivalent to
 this.write(buf, 0, buf.length).
| Parameters | |
|---|---|
| buf | byte: A byte array | 
Protected methods
clearError
protected void clearError ()
Clears the internal error state of this stream.
 This method will cause subsequent invocations of checkError() to return false until another write
 operation fails and invokes setError().
setError
protected void setError ()
Sets the error state of the stream to true.
 
 This method will cause subsequent invocations of checkError() to return true until
 clearError() is invoked.
