Added in API level 1

PrintWriter

public class PrintWriter
extends Writer

java.lang.Object
↳	java.io.Writer
	↳	java.io.PrintWriter

Prints formatted representations of objects to a text-output stream. This class implements all of the print methods found in PrintStream. It does not contain methods for writing raw bytes, for which a program should use unencoded byte streams.

Unlike the PrintStream class, if automatic flushing is enabled it will be done only when one of the println, printf, or format methods is invoked, rather than whenever a newline character happens to be output. These methods use the platform's own notion of line separator rather than the newline character.

Methods in this class never throw I/O exceptions, although some of its constructors may. The client may inquire as to whether any errors have occurred by invoking checkError().

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

Fields
`protected Writer`	`out` The underlying character-output stream of this `PrintWriter`.

Inherited fields

From class java.io.Writer


    protected
    
    
    Object

lock

The object used to synchronize operations on this stream.

Public constructors
`PrintWriter(Writer out)` Creates a new PrintWriter, without automatic line flushing.
`PrintWriter(Writer out, boolean autoFlush)` Creates a new PrintWriter.
`PrintWriter(OutputStream out)` Creates a new PrintWriter, without automatic line flushing, from an existing OutputStream.
`PrintWriter(OutputStream out, boolean autoFlush)` Creates a new PrintWriter from an existing OutputStream.
`PrintWriter(OutputStream out, boolean autoFlush, Charset charset)` Creates a new PrintWriter from an existing OutputStream.
`PrintWriter(String fileName)` Creates a new PrintWriter, without automatic line flushing, with the specified file name.
`PrintWriter(String fileName, String csn)` Creates a new PrintWriter, without automatic line flushing, with the specified file name and charset.
`PrintWriter(String fileName, Charset charset)` Creates a new PrintWriter, without automatic line flushing, with the specified file name and charset.
`PrintWriter(File file)` Creates a new PrintWriter, without automatic line flushing, with the specified file.
`PrintWriter(File file, String csn)` Creates a new PrintWriter, without automatic line flushing, with the specified file and charset.
`PrintWriter(File file, Charset charset)` Creates a new PrintWriter, without automatic line flushing, with the specified file and charset.

Public methods
`PrintWriter`	`append(char c)` Appends the specified character to this writer.
`PrintWriter`	`append(CharSequence csq, int start, int end)` Appends a subsequence of the specified character sequence to this writer.
`PrintWriter`	`append(CharSequence csq)` Appends the specified character sequence to this writer.
`boolean`	`checkError()` Flushes the stream if it's not closed and checks its error state.
`void`	`close()` Closes the stream and releases any system resources associated with it.
`void`	`flush()` Flushes the stream.
`PrintWriter`	`format(String format, Object... args)` Writes a formatted string to this writer using the specified format string and arguments.
`PrintWriter`	`format(Locale l, String format, Object... args)` Writes a formatted string to this writer using the specified format string and arguments.
`void`	`print(int i)` Prints an integer.
`void`	`print(double d)` Prints a double-precision floating-point number.
`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.
`PrintWriter`	`printf(Locale l, String format, Object... args)` A convenience method to write a formatted string to this writer using the specified format string and arguments.
`PrintWriter`	`printf(String format, Object... args)` A convenience method to write a formatted string to this writer using the specified format string and arguments.
`void`	`println(Object x)` Prints an Object and then terminates the line.
`void`	`println(char x)` Prints a character and then terminates the line.
`void`	`println(boolean x)` Prints a boolean value and then terminates the line.
`void`	`println(long x)` Prints a long integer and then terminates the line.
`void`	`println()` Terminates the current line by writing the line separator string.
`void`	`println(int x)` Prints an integer and then terminates the line.
`void`	`println(String x)` Prints a String and then terminates the line.
`void`	`println(char[] x)` Prints an array of characters and then terminates the line.
`void`	`println(float x)` Prints a floating-point number and then terminates the line.
`void`	`println(double x)` Prints a double-precision floating-point number and then terminates the line.
`void`	`write(int c)` Writes a single character.
`void`	`write(char[] buf, int off, int len)` Writes A Portion of an array of characters.
`void`	`write(String s)` Writes a string.
`void`	`write(String s, int off, int len)` Writes a portion of a string.
`void`	`write(char[] buf)` Writes an array of characters.

Protected methods
`void`	`clearError()` Clears the error state of this stream.
`void`	`setError()` Indicates that an error has occurred.

Inherited methods

From class


        
          java.io.Writer

`Writer`	`append(char c)` Appends the specified character to this writer.
`Writer`	`append(CharSequence csq, int start, int end)` Appends a subsequence of the specified character sequence to this writer.
`Writer`	`append(CharSequence csq)` Appends the specified character sequence to this writer.
`abstract void`	`close()` Closes the stream, flushing it first.
`abstract void`	`flush()` Flushes the stream.
`static Writer`	`nullWriter()` Returns a new `Writer` which discards all characters.
`void`	`write(String str)` Writes a string.
`void`	`write(int c)` Writes a single character.
`void`	`write(String str, int off, int len)` Writes a portion of a string.
`abstract void`	`write(char[] cbuf, int off, int len)` Writes a portion of an array of characters.
`void`	`write(char[] cbuf)` Writes an array of characters.

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface


        
          java.lang.Appendable

`abstract Appendable`	`append(char c)` Appends the specified character to this `Appendable`.
`abstract Appendable`	`append(CharSequence csq, int start, int end)` Appends a subsequence of the specified character sequence to this `Appendable`.
`abstract Appendable`	`append(CharSequence csq)` Appends the specified character sequence to this `Appendable`.

From interface


        
          java.io.Closeable


      close()

Closes this stream and releases any system resources associated with it.

From interface


        
          java.io.Flushable


      flush()

Flushes this stream by writing any buffered output to the underlying stream.

From interface


        
          java.lang.AutoCloseable


      close()

Closes this resource, relinquishing any underlying resources.

Fields

out

Added in API level 1

protected Writer out

The underlying character-output stream of this PrintWriter.

Public constructors

PrintWriter

Added in API level 1

public PrintWriter (Writer out)

Creates a new PrintWriter, without automatic line flushing.

Parameters
`out`	`Writer`: A character-output stream

PrintWriter

Added in API level 1

public PrintWriter (Writer out, 
                boolean autoFlush)

Creates a new PrintWriter.

Parameters
`out`	`Writer`: A character-output stream
`autoFlush`	`boolean`: A boolean; if true, the `println`, `printf`, or `format` methods will flush the output buffer

PrintWriter

Added in API level 1

public PrintWriter (OutputStream out)

Creates a new PrintWriter, without automatic line flushing, from an existing OutputStream. This convenience constructor creates the necessary intermediate OutputStreamWriter, which will convert characters into bytes using the default character encoding.

Parameters
`out`	`OutputStream`: An output stream

See also:

OutputStreamWriter.OutputStreamWriter(java.io.OutputStream)

PrintWriter

Added in API level 1

public PrintWriter (OutputStream out, 
                boolean autoFlush)

Creates a new PrintWriter from an existing OutputStream. This convenience constructor creates the necessary intermediate OutputStreamWriter, which will convert characters into bytes using the default character encoding.

Parameters
`out`	`OutputStream`: An output stream
`autoFlush`	`boolean`: A boolean; if true, the `println`, `printf`, or `format` methods will flush the output buffer

See also:

OutputStreamWriter.OutputStreamWriter(java.io.OutputStream)

PrintWriter

Added in API level 33

public PrintWriter (OutputStream out, 
                boolean autoFlush, 
                Charset charset)

Parameters
`out`	`OutputStream`: An output stream
`autoFlush`	`boolean`: A boolean; if true, the `println`, `printf`, or `format` methods will flush the output buffer
`charset`	`Charset`: A charset

PrintWriter

Added in API level 1

public PrintWriter (String fileName)

Creates a new PrintWriter, 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 writer. 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 string 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

PrintWriter

Added in API level 1

public PrintWriter (String fileName, 
                String csn)

Creates a new PrintWriter, 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 writer. 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 string 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

PrintWriter

Added in API level 33

public PrintWriter (String fileName, 
                Charset charset)

Parameters
`fileName`	`String`: The name of the file to use as the destination of this writer. 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

PrintWriter

Added in API level 1

public PrintWriter (File file)

Creates a new PrintWriter, 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 writer. 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

PrintWriter

Added in API level 1

public PrintWriter (File file, 
                String csn)

Creates a new PrintWriter, 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 writer. 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

PrintWriter

Added in API level 33

public PrintWriter (File file, 
                Charset charset)

Parameters
`file`	`File`: The file to use as the destination of this writer. 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

Public methods

append

Added in API level 1

public PrintWriter append (char c)

Appends the specified character to this writer.

An invocation of this method of the form out.append(c) behaves in exactly the same way as the invocation

out.write(c)

Parameters
`c`	`char`: The 16-bit character to append

Returns
`PrintWriter`	This writer

append

Added in API level 1

public PrintWriter append (CharSequence csq, 
                int start, 
                int end)

Appends a subsequence of the specified character sequence to this writer.

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.write(csq.subSequence(start, end).toString())

Parameters
`csq`	`CharSequence`: The character sequence from which a subsequence will be appended. If `csq` is `null`, then characters will be appended as if `csq` contained 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
`PrintWriter`	This writer

Throws
`IndexOutOfBoundsException`	If `start` or `end` are negative, `start` is greater than `end`, or `end` is greater than `csq.length()`

append

Added in API level 1

public PrintWriter append (CharSequence csq)

Appends the specified character sequence to this writer.

An invocation of this method of the form out.append(csq) behaves in exactly the same way as the invocation

out.write(csq.toString())

Depending on the specification of toString for the character sequence csq, the entire sequence may not be appended. For instance, invoking the 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. If `csq` is `null`, then the four characters `"null"` are appended to this writer.

Returns
`PrintWriter`	This writer

checkError

Added in API level 1

public boolean checkError ()

Flushes the stream if it's not closed and checks its error state.

Returns
`boolean`	`true` if the print stream has encountered an error, either on the underlying output stream or during a format conversion.

close

Added in API level 1

public void close ()

Closes the stream and releases any system resources associated with it. Closing a previously closed stream has no effect.

See also:

checkError()

flush

Added in API level 1

public void flush ()

Flushes the stream.

See also:

checkError()

format

Added in API level 1

public PrintWriter format (String format, 
                Object... args)

Writes a formatted string to this writer using the specified format string and arguments. If automatic flushing is enabled, calls to this method will flush the output buffer.

The locale always used is the one returned by Locale.getDefault(), regardless of any previous invocations of other formatting methods on this object.

Parameters

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 a `null` argument depends on the conversion.

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 a null argument depends on the conversion.

Returns
`PrintWriter`	This writer

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 `format` is `null`

format

Added in API level 1

public PrintWriter format (Locale l, 
                String format, 
                Object... args)

Writes a formatted string to this writer using the specified format string and arguments. If automatic flushing is enabled, calls to this method will flush the output buffer.

Parameters
`l`	`Locale`: The locale to apply during formatting. If `l` is `null` then 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 a `null` argument depends on the conversion.

Returns
`PrintWriter`	This writer

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 `format` is `null`

print

Added in API level 1

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`: The `int` to be printed

See also:

Integer.toString(int)

print

Added in API level 1

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`: The `double` to be printed

See also:

Double.toString(double)

print

Added in API level 1

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`: The `boolean` to be printed

print

Added in API level 1

public void print (char c)

Prints 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.

Parameters
`c`	`char`: The `char` to be printed

print

Added in API level 1

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`: The `long` to be printed

See also:

Long.toString(long)

print

Added in API level 1

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`: The `float` to be printed

See also:

Float.toString(float)

print

Added in API level 1

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 platform's default character encoding, and these bytes are written in exactly the manner of the write(int) method.

Parameters
`s`	`String`: The `String` to be printed

print

Added in API level 1

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`: The `Object` to be printed

See also:

Object.toString()

print

Added in API level 1

public void print (char[] s)

Prints 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.

Parameters
`s`	`char`: The array of chars to be printed

Throws
`NullPointerException`	If `s` is `null`

printf

Added in API level 1

public PrintWriter printf (Locale l, 
                String format, 
                Object... args)

A convenience method to write a formatted string to this writer using the specified format string and arguments. If automatic flushing is enabled, calls to this method will flush the output buffer.

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. If `l` is `null` then 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 a `null` argument depends on the conversion.

Returns
`PrintWriter`	This writer

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 `format` is `null`

printf

Added in API level 1

public PrintWriter printf (String format, 
                Object... args)

A convenience method to write a formatted string to this writer using the specified format string and arguments. If automatic flushing is enabled, calls to this method will flush the output buffer.

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

Returns
`PrintWriter`	This writer

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 `format` is `null`

println

Added in API level 1

public void println (Object x)

Prints an Object and then terminates 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`: The `Object` to be printed.

println

Added in API level 1

public void println (char x)

Prints a character and then terminates the line. This method behaves as though it invokes print(char) and then println().

Parameters
`x`	`char`: the `char` value to be printed

println

Added in API level 1

public void println (boolean x)

Prints a boolean value and then terminates the line. This method behaves as though it invokes print(boolean) and then println().

Parameters
`x`	`boolean`: the `boolean` value to be printed

println

Added in API level 1

public void println (long x)

Prints a long integer and then terminates the line. This method behaves as though it invokes print(long) and then println().

Parameters
`x`	`long`: the `long` value to be printed

println

Added in API level 1

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

Added in API level 1

public void println (int x)

Prints an integer and then terminates the line. This method behaves as though it invokes print(int) and then println().

Parameters
`x`	`int`: the `int` value to be printed

println

Added in API level 1

public void println (String x)

Prints a String and then terminates the line. This method behaves as though it invokes print(java.lang.String) and then println().

Parameters
`x`	`String`: the `String` value to be printed

println

Added in API level 1

public void println (char[] x)

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

Parameters
`x`	`char`: the array of `char` values to be printed

println

Added in API level 1

public void println (float x)

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

Parameters
`x`	`float`: the `float` value to be printed

println

Added in API level 1

public void println (double x)

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

Parameters
`x`	`double`: the `double` value to be printed

write

Added in API level 1

public void write (int c)

Writes a single character.

Parameters
`c`	`int`: int specifying a character to be written.

write

Added in API level 1

public void write (char[] buf, 
                int off, 
                int len)

Writes A Portion of an array of characters.

Parameters
`buf`	`char`: Array of characters
`off`	`int`: Offset from which to start writing characters
`len`	`int`: Number of characters to write

Throws
`IndexOutOfBoundsException`	If the values of the `off` and `len` parameters cause the corresponding method of the underlying `Writer` to throw an `IndexOutOfBoundsException`

write

Added in API level 1

public void write (String s)

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

Parameters
`s`	`String`: String to be written

write

Added in API level 1

public void write (String s, 
                int off, 
                int len)

Writes a portion of a string.

Parameters
`s`	`String`: A String
`off`	`int`: Offset from which to start writing characters
`len`	`int`: Number of characters to write

Throws
`IndexOutOfBoundsException`	If the values of the `off` and `len` parameters cause the corresponding method of the underlying `Writer` to throw an `IndexOutOfBoundsException`

write

Added in API level 1

public void write (char[] buf)

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

Parameters
`buf`	`char`: Array of characters to be written

Protected methods

clearError

Added in API level 9

protected void clearError ()

Clears the 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

Added in API level 1

protected void setError ()

Indicates that an error has occurred.

This method will cause subsequent invocations of checkError() to return true until clearError() is invoked.