Added in API level 1

DataOutputStream

open class DataOutputStream : FilterOutputStream, DataOutput
kotlin.Any
   ↳ java.io.OutputStream
   ↳ java.io.FilterOutputStream
   ↳ java.io.DataOutputStream

A data output stream lets an application write primitive Java data types to an output stream in a portable way. An application can then use a data input stream to read the data back in.

Summary

Public constructors

Creates a new data output stream to write data to the specified underlying output stream.

Public methods
open Unit

Flushes this data output stream.

Int

Returns the current value of the counter written, the number of bytes written to this data output stream so far.

open Unit
write(b: Int)

Writes the specified byte (the low eight bits of the argument b) to the underlying output stream.

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

Writes len bytes from the specified byte array starting at offset off to the underlying output stream.

Unit

Writes a boolean to the underlying output stream as a 1-byte value.

Unit

Writes out a byte to the underlying output stream as a 1-byte value.

Unit

Writes out the string to the underlying output stream as a sequence of bytes.

Unit

Writes a char to the underlying output stream as a 2-byte value, high byte first.

Unit

Writes a string to the underlying output stream as a sequence of characters.

Unit

Converts the double argument to a long using the doubleToLongBits method in class Double, and then writes that long value to the underlying output stream as an 8-byte quantity, high byte first.

Unit

Converts the float argument to an int using the floatToIntBits method in class Float, and then writes that int value to the underlying output stream as a 4-byte quantity, high byte first.

Unit

Writes an int to the underlying output stream as four bytes, high byte first.

Unit

Writes a long to the underlying output stream as eight bytes, high byte first.

Unit

Writes a short to the underlying output stream as two bytes, high byte first.

Unit

Writes a string to the underlying output stream using modified UTF-8 encoding in a machine-independent manner.

Inherited functions
Properties
Int

The number of bytes written to the data output stream so far.

Inherited properties

Public constructors

DataOutputStream

Added in API level 1
DataOutputStream(out: OutputStream!)

Creates a new data output stream to write data to the specified underlying output stream. The counter written is set to zero.

Parameters
out OutputStream!: the underlying output stream, to be saved for later use.

Public methods

flush

Added in API level 1
open fun flush(): Unit

Flushes this data output stream. This forces any buffered output bytes to be written out to the stream.

The flush method of DataOutputStream calls the flush method of its underlying output stream.

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

size

Added in API level 1
fun size(): Int

Returns the current value of the counter written, the number of bytes written to this data output stream so far. If the counter overflows, it will be wrapped to Integer.MAX_VALUE.

Return
Int the value of the written field.

write

Added in API level 1
open fun write(b: Int): Unit

Writes the specified byte (the low eight bits of the argument b) to the underlying output stream. If no exception is thrown, the counter written is incremented by 1.

Implements the write method of OutputStream.

Parameters
b Int: the byte to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

write

Added in API level 1
open fun write(
    b: ByteArray!,
    off: Int,
    len: Int
): Unit

Writes len bytes from the specified byte array starting at offset off to the underlying output stream. If no exception is thrown, the counter written is incremented by len.

Parameters
b ByteArray!: the data.
off Int: the start offset in the data.
len Int: the number of bytes to write.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeBoolean

Added in API level 1
fun writeBoolean(v: Boolean): Unit

Writes a boolean to the underlying output stream as a 1-byte value. The value true is written out as the value (byte)1; the value false is written out as the value (byte)0. If no exception is thrown, the counter written is incremented by 1.

Parameters
v Boolean: a boolean value to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeByte

Added in API level 1
fun writeByte(v: Int): Unit

Writes out a byte to the underlying output stream as a 1-byte value. If no exception is thrown, the counter written is incremented by 1.

Parameters
v Int: a byte value to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeBytes

Added in API level 1
fun writeBytes(s: String!): Unit

Writes out the string to the underlying output stream as a sequence of bytes. Each character in the string is written out, in sequence, by discarding its high eight bits. If no exception is thrown, the counter written is incremented by the length of s.

Parameters
s String!: a string of bytes to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeChar

Added in API level 1
fun writeChar(v: Int): Unit

Writes a char to the underlying output stream as a 2-byte value, high byte first. If no exception is thrown, the counter written is incremented by 2.

Parameters
v Int: a char value to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeChars

Added in API level 1
fun writeChars(s: String!): Unit

Writes a string to the underlying output stream as a sequence of characters. Each character is written to the data output stream as if by the writeChar method. If no exception is thrown, the counter written is incremented by twice the length of s.

Parameters
s String!: a String value to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeDouble

Added in API level 1
fun writeDouble(v: Double): Unit

Converts the double argument to a long using the doubleToLongBits method in class Double, and then writes that long value to the underlying output stream as an 8-byte quantity, high byte first. If no exception is thrown, the counter written is incremented by 8.

Parameters
v Double: a double value to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeFloat

Added in API level 1
fun writeFloat(v: Float): Unit

Converts the float argument to an int using the floatToIntBits method in class Float, and then writes that int value to the underlying output stream as a 4-byte quantity, high byte first. If no exception is thrown, the counter written is incremented by 4.

Parameters
v Float: a float value to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeInt

Added in API level 1
fun writeInt(v: Int): Unit

Writes an int to the underlying output stream as four bytes, high byte first. If no exception is thrown, the counter written is incremented by 4.

Parameters
v Int: an int to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeLong

Added in API level 1
fun writeLong(v: Long): Unit

Writes a long to the underlying output stream as eight bytes, high byte first. In no exception is thrown, the counter written is incremented by 8.

Parameters
v Long: a long to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeShort

Added in API level 1
fun writeShort(v: Int): Unit

Writes a short to the underlying output stream as two bytes, high byte first. If no exception is thrown, the counter written is incremented by 2.

Parameters
v Int: a short to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

writeUTF

Added in API level 1
fun writeUTF(str: String!): Unit

Writes a string to the underlying output stream using modified UTF-8 encoding in a machine-independent manner.

First, two bytes are written to the output stream as if by the writeShort method giving the number of bytes to follow. This value is the number of bytes actually written out, not the length of the string. Following the length, each character of the string is output, in sequence, using the modified UTF-8 encoding for the character. If no exception is thrown, the counter written is incremented by the total number of bytes written to the output stream. This will be at least two plus the length of str, and at most two plus thrice the length of str.

Parameters
s the string value to be written.
str String!: a string to be written.
Exceptions
java.io.IOException if an I/O error occurs.
java.io.IOException if an I/O error occurs.

Properties

written

Added in API level 1
protected var written: Int

The number of bytes written to the data output stream so far. If this counter overflows, it will be wrapped to Integer.MAX_VALUE.