Added in API level 1

PrintStream

open class PrintStream : FilterOutputStream, Appendable, Closeable

kotlin.Any
↳	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 java.nio.charset.CharsetEncoder class should be used when more control over the encoding process is required.

Summary

Public constructors
`PrintStream(out: OutputStream!)` Creates a new print stream, without automatic line flushing, with the specified OutputStream.
`PrintStream(out: OutputStream!, autoFlush: Boolean)` Creates a new print stream, with the specified OutputStream and line flushing.
`PrintStream(out: OutputStream!, autoFlush: Boolean, encoding: String!)` Creates a new print stream, with the specified OutputStream, line flushing, and character encoding.
`PrintStream(out: OutputStream!, autoFlush: Boolean, charset: Charset!)` Creates a new print stream, with the specified OutputStream, line flushing and charset.
`PrintStream(fileName: String!)` Creates a new print stream, without automatic line flushing, with the specified file name.
`PrintStream(fileName: String!, csn: String!)` Creates a new print stream, without automatic line flushing, with the specified file name and charset.
`PrintStream(fileName: String!, charset: Charset!)` Creates a new print stream, without automatic line flushing, with the specified file name and charset.
`PrintStream(file: File!)` Creates a new print stream, without automatic line flushing, with the specified file.
`PrintStream(file: File!, csn: String!)` 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.

Public methods
open PrintStream	`append(csq: CharSequence?)` Appends the specified character sequence to this output stream.
open PrintStream	`append(csq: CharSequence?, start: Int, end: Int)` Appends a subsequence of the specified character sequence to this output stream.
open PrintStream	`append(c: Char)` Appends the specified character to this output stream.
open Boolean	`checkError()` Flushes the stream and checks its error state.
open Unit	`close()` Closes the stream.
open Unit	`flush()` Flushes the stream.
open PrintStream!	`format(format: String!, vararg args: Any!)` Writes a formatted string to this output stream using the specified format string and arguments.
open PrintStream!	`format(l: Locale!, format: String!, vararg args: Any!)` Writes a formatted string to this output stream using the specified format string and arguments.
open Unit	`print(b: Boolean)` Prints a boolean value.
open Unit	`print(c: Char)` Prints a character.
open Unit	`print(i: Int)` Prints an integer.
open Unit	`print(l: Long)` Prints a long integer.
open Unit	`print(f: Float)` Prints a floating-point number.
open Unit	`print(d: Double)` Prints a double-precision floating-point number.
open Unit	`print(s: CharArray!)` Prints an array of characters.
open Unit	`print(s: String!)` Prints a string.
open Unit	`print(obj: Any!)` Prints an object.
open PrintStream!	`printf(format: String!, vararg args: Any!)` A convenience method to write a formatted string to this output stream using the specified format string and arguments.
open PrintStream!	`printf(l: Locale!, format: String!, vararg args: Any!)` A convenience method to write a formatted string to this output stream using the specified format string and arguments.
open Unit	`println()` Terminates the current line by writing the line separator string.
open Unit	`println(x: Boolean)` Prints a boolean and then terminate the line.
open Unit	`println(x: Char)` Prints a character and then terminate the line.
open Unit	`println(x: Int)` Prints an integer and then terminate the line.
open Unit	`println(x: Long)` Prints a long and then terminate the line.
open Unit	`println(x: Float)` Prints a float and then terminate the line.
open Unit	`println(x: Double)` Prints a double and then terminate the line.
open Unit	`println(x: CharArray!)` Prints an array of characters and then terminate the line.
open Unit	`println(x: String!)` Prints a String and then terminate the line.
open Unit	`println(x: Any!)` Prints an Object and then terminate the line.
open Unit	`write(b: Int)` Writes the specified byte to this stream.
open Unit	`write(buf: ByteArray!, off: Int, len: Int)` Writes `len` bytes from the specified byte array starting at offset `off` to this stream.
open Unit	`write(buf: ByteArray!)` Writes all bytes from the specified byte array to this stream.
open Unit	`writeBytes(buf: ByteArray!)` Writes all bytes from the specified byte array to this stream.

Protected methods
open Unit	`clearError()` Clears the internal error state of this stream.
open Unit	`setError()` Sets the error state of the stream to `true`.

Inherited functions

From class OutputStream

OutputStream!

nullOutputStream()

Returns a new OutputStream which discards all bytes. The returned stream is initially open. The stream is closed by calling the close() method. Subsequent calls to close() have no effect.

While the stream is open, the write(int), write(byte[]), and write(byte[], int, int) methods do nothing. After the stream has been closed, these methods all throw IOException.

The flush() method does nothing.

Inherited properties

From class FilterOutputStream

OutputStream!

out

The underlying output stream to be filtered.

Public constructors

PrintStream

Added in API level 1

PrintStream(out: OutputStream!)

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

See Also

java.io.PrintWriter#PrintWriter(java.io.OutputStream)

PrintStream

Added in API level 1

PrintStream(
    out: OutputStream!, 
    autoFlush: Boolean)

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 the `println` methods is invoked, or a newline character or byte (`'\n'`) is written

See Also

java.io.PrintWriter#PrintWriter(java.io.OutputStream, boolean)

PrintStream

Added in API level 1

PrintStream(
    out: OutputStream!, 
    autoFlush: Boolean, 
    encoding: String!)

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 the `println` methods is invoked, or a newline character or byte (`'\n'`) is written
`encoding`	String!: The name of a supported character encoding

Exceptions
`java.io.UnsupportedEncodingException`	If the named encoding is not supported

PrintStream

Added in API level 33

PrintStream(
    out: OutputStream!, 
    autoFlush: Boolean, 
    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 the `println` methods is invoked, or a newline character or byte (`'\n'`) is written
`charset`	Charset!: A charset

PrintStream

Added in API level 1

PrintStream(fileName: String!)

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.

Exceptions
`java.io.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
`java.lang.SecurityException`	If a security manager is present and java.lang.SecurityManager#checkWrite denies write access to the file

PrintStream

Added in API level 1

PrintStream(
    fileName: String!, 
    csn: String!)

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

Exceptions
`java.io.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
`java.lang.SecurityException`	If a security manager is present and java.lang.SecurityManager#checkWrite denies write access to the file
`java.io.UnsupportedEncodingException`	If the named charset is not supported

PrintStream

Added in API level 33

PrintStream(
    fileName: String!, 
    charset: 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

Exceptions
`java.io.IOException`	if an I/O error occurs while opening or creating the file
`java.lang.SecurityException`	If a security manager is present and java.lang.SecurityManager#checkWrite denies write access to the file

PrintStream

Added in API level 1

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.

Exceptions
`java.io.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
`java.lang.SecurityException`	If a security manager is present and java.lang.SecurityManager#checkWrite denies write access to the file

PrintStream

Added in API level 1

PrintStream(
    file: File!, 
    csn: String!)

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

Exceptions
`java.io.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
`java.lang.SecurityException`	If a security manager is present and java.lang.SecurityManager#checkWrite denies write access to the file
`java.io.UnsupportedEncodingException`	If the named charset is not supported

PrintStream

Added in API level 33

PrintStream(
    file: File!, 
    charset: 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

Exceptions
`java.io.IOException`	if an I/O error occurs while opening or creating the file
`java.lang.SecurityException`	If a security manager is present and java.lang.SecurityManager#checkWrite denies write access to the file

Public methods

append

Added in API level 1

open fun append(csq: CharSequence?): PrintStream

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

<code>out.print(csq.toString())
  </code>

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. If `csq` is `null`, then the four characters `"null"` are appended to this output stream.

Return
`PrintStream`	This output stream

Exceptions
`java.io.IOException`	If an I/O error occurs

append

Added in API level 1

open fun append(
    csq: CharSequence?, 
    start: Int, 
    end: Int
): PrintStream

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

<code>out.print(csq.subSequence(start, end).toString())
  </code>

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

Return
`PrintStream`	This output stream

Exceptions
`java.lang.IndexOutOfBoundsException`	If `start` or `end` are negative, `start` is greater than `end`, or `end` is greater than `csq.length()`
`java.io.IOException`	If an I/O error occurs

append

Added in API level 1

open fun append(c: Char): PrintStream

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

<code>out.print(c)
  </code>

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

Return
`PrintStream`	This output stream

Exceptions
`java.io.IOException`	If an I/O error occurs

checkError

Added in API level 1

open fun checkError(): Boolean

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:

<code>Thread.currentThread().interrupt();
  </code>

or the equivalent.

Return
`Boolean`	`true` if and only if this stream has encountered an `IOException` other than `InterruptedIOException`, or the `setError` method has been invoked

close

Added in API level 1

open fun close(): Unit

Closes the stream. This is done by flushing the stream and then closing the underlying output stream.

Exceptions
`java.lang.Exception`	if this resource cannot be closed
`java.io.IOException`	if an I/O error occurs

See Also

flush

Added in API level 1

open fun flush(): Unit

Flushes the stream. This is done by writing any buffered output bytes to the underlying output stream and then flushing that stream.

Exceptions
`java.io.IOException`	if an I/O error occurs.

See Also

java.io.OutputStream#flush()

format

Added in API level 1

open fun format(
    format: String!, 
    vararg args: Any!
): PrintStream!

Writes a formatted string to this output stream using the specified format string and arguments.

The locale always used is the one returned by java.util.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 Any!: 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.

Parameters
`format`	String!: A format string as described in Format string syntax
`args`	Any!: 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.

Return
`PrintStream!`	This output stream

Exceptions
`java.util.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.
`java.lang.NullPointerException`	If the `format` is `null`

format

Added in API level 1

open fun format(
    l: Locale!, 
    format: String!, 
    vararg args: Any!
): PrintStream!

Writes a formatted string to this output stream using the specified format string and arguments.

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`	Any!: 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.

Return
`PrintStream!`	This output stream

Exceptions
`java.util.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.
`java.lang.NullPointerException`	If the `format` is `null`

print

Added in API level 1

open fun print(b: Boolean): Unit

Prints 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.

Parameters
`b`	Boolean: The `boolean` to be printed

print

Added in API level 1

open fun print(c: Char): Unit

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: The `char` to be printed

print

Added in API level 1

open fun print(i: Int): Unit

Prints 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.

Parameters
`i`	Int: The `int` to be printed

See Also

java.lang.Integer#toString(int)

print

Added in API level 1

open fun print(l: Long): Unit

Prints 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.

Parameters
`l`	Long: The `long` to be printed

See Also

java.lang.Long#toString(long)

print

Added in API level 1

open fun print(f: Float): Unit

Prints 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.

Parameters
`f`	Float: The `float` to be printed

See Also

java.lang.Float#toString(float)

print

Added in API level 1

open fun print(d: Double): Unit

Prints 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.

Parameters
`d`	Double: The `double` to be printed

See Also

java.lang.Double#toString(double)

print

Added in API level 1

open fun print(s: CharArray!): Unit

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`	CharArray!: The array of chars to be printed

Exceptions
`java.lang.NullPointerException`	If `s` is `null`

print

Added in API level 1

open fun print(s: String!): Unit

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!: The `String` to be printed

print

Added in API level 1

open fun print(obj: Any!): Unit

Prints 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.

Parameters
`obj`	Any!: The `Object` to be printed

See Also

java.lang.Object#toString()

printf

Added in API level 1

open fun printf(
    format: String!, 
    vararg args: Any!
): PrintStream!

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

<code>out.format(format, args)
  </code>

Parameters

format String!: A format string as described in Format string syntax

Return
`PrintStream!`	This output stream

Exceptions
`java.util.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.
`java.lang.NullPointerException`	If the `format` is `null`

printf

Added in API level 1

open fun printf(
    l: Locale!, 
    format: String!, 
    vararg args: Any!
): PrintStream!

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

<code>out.format(l, format, args)
  </code>

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`	Any!: 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.

Return
`PrintStream!`	This output stream

Exceptions
`java.util.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.
`java.lang.NullPointerException`	If the `format` is `null`

println

Added in API level 1

open fun println(): Unit

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

open fun println(x: Boolean): Unit

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

Parameters
`x`	Boolean: The `boolean` to be printed

println

Added in API level 1

open fun println(x: Char): Unit

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

Parameters
`x`	Char: The `char` to be printed.

println

Added in API level 1

open fun println(x: Int): Unit

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

Parameters
`x`	Int: The `int` to be printed.

println

Added in API level 1

open fun println(x: Long): Unit

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

Parameters
`x`	Long: a The `long` to be printed.

println

Added in API level 1

open fun println(x: Float): Unit

Prints a float and then terminate the line. This method behaves as though it invokes print(float) and then println().

Parameters
`x`	Float: The `float` to be printed.

println

Added in API level 1

open fun println(x: Double): Unit

Prints a double and then terminate the line. This method behaves as though it invokes print(double) and then println().

Parameters
`x`	Double: The `double` to be printed.

println

Added in API level 1

open fun println(x: CharArray!): Unit

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

Parameters
`x`	CharArray!: an array of chars to print.

println

Added in API level 1

open fun println(x: String!): Unit

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!: The `String` to be printed.

println

Added in API level 1

open fun println(x: Any!): Unit

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`	Any!: The `Object` to be printed.

write

Added in API level 1

open fun write(b: Int): Unit

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

Exceptions
`java.io.IOException`	if an I/O error occurs. In particular, an `IOException` may be thrown if the output stream has been closed.

See Also

#print(char)
#println(char)

write

Added in API level 1

open fun write(
    buf: ByteArray!, 
    off: Int, 
    len: Int
): Unit

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
`b`	the data.
`off`	Int: Offset from which to start taking bytes
`len`	Int: Number of bytes to write
`buf`	ByteArray!: A byte array

Exceptions
`java.io.IOException`	if an I/O error occurs. In particular, an `IOException` is thrown if the output stream is closed.

write

Added in API level 1

open fun write(buf: ByteArray!): Unit

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.

Parameters
`b`	the data to be written.
`buf`	ByteArray!: A byte array

Exceptions
`java.io.IOException`	If an I/O error occurs.

See Also

#writeBytes(byte[])

writeBytes

Added in API level 34

open fun writeBytes(buf: ByteArray!): Unit

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.

Parameters
`buf`	ByteArray!: A byte array

Protected methods

clearError

Added in API level 9

protected open fun clearError(): Unit

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

Added in API level 1

protected open fun setError(): Unit

Sets the error state of the stream to true.

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