Class DataOutputStream

package java.io

java.lang.Object
  |
  +--java.io.OutputStream
        |
        +--java.io.DataOutputStream

설명

All Implemented Interfaces:

• DataOutput

implements DataOutput:

자바에서 지원하는 타입 객체를 바이트 스트림으로 변환해 출력할 수 있도록 만든 출력 스트림 클래스.

필드 요약

• protected OutputStream out — 실제 출력할 출력스트림.
• protected  int written — out로 출력한 바이트 갯수.

생성자 요약

• DataOutputStream ( OutputStream out) 새로운 객체를 만든다.

메서드 요약

• void close () — 출력 스트림을 닫는다.
• void flush () — 중간 버퍼에 남아있는 정보들을 실제 출력하도록 한다.
• void write (byte[] buf, int offset, int len) — 바이트 배열의 일부분을 출력한다.
• void write (int b) — 매개변수로 받은 변수 값 중 상위 24비트는 버리고 나머지 8비트만 출력한다.
• void writeBoolean (boolean b) — 매개변수 값이 true이면 1 false이면 0을 출력한다.
• void writeByte (int b) — 매개변수로 받은 변수 값 중 상위 24비트는 버리고 나머지 8비트만 출력한다.
• void writeChar (int c) — 매개변수로 받은 변수 값 중 상위 16비트는 버리고 8~15비트까지 출력하고 이어 하위 8비트를 출력한다.
• void writeChars ( String s) — 문자열을 구성하는 문자들을 인덱스 0 부터 차례대로 출력한다.
• void writeDouble (double v)
• void writeFloat (float v)
• void writeInt (int i) — 매개변수로 받은 변수 값 중 상위 8비트부터 차례대로 8비트 단위로 출력한다.
• void writeLong (long l) — 매개변수로 받은 변수 값 중 상위 8비트부터 차례대로 8비트 단위로 출력한다.
• void writeShort (int s) — 매개변수로 받은 변수 값 중 상위 16비트는 버리고 8~15비트까지 출력하고 이어 하위 8비트를 출력한다.
• void writeUTF ( String s) — 문자열을 UTF형식으로 바꿔 출력한다.

필드 상세

written

protected int written

• out로 출력한 바이트 갯수.

out

protected OutputStream out

• 실제 출력할 출력스트림.

DataOutputStream

public DataOutputStream(OutputStream out)

Parameters:

• out - 실제 바이트 정보가 출력될 출력 스트림.

write

public void write(int b)
           throws IOException

Specified by:

• write in interface DataOutput

Overrides:

• write in class OutputStream

Parameters:

• b - 출력할 정보.

Throws:

• IOException -

write

public void write(byte[] buf,
                  int offset,
                  int len)
           throws IOException

Specified by:

• write in interface DataOutput

Overrides:

• write in class OutputStream

Parameters:

• len - 출력할 갯수.

Throws:

• IOException -

flush

public void flush()
           throws IOException

Overrides:

• flush in class OutputStream
• Following copied from class: java.io.OutputStream

Throws:

• IOException -

close

public void close()
           throws IOException

Overrides:

• close in class OutputStream

Throws:

• IOException -

writeBoolean

public final void writeBoolean(boolean b)
                        throws IOException

Specified by:

• writeBoolean in interface DataOutput

Parameters:

• b - 출력할 boolean변수.

Throws:

• IOException -

writeByte

public final void writeByte(int b)
                     throws IOException

Specified by:

• writeByte in interface DataOutput

Parameters:

• b - 출력할 정보.

Throws:

• IOException -

writeShort

public final void writeShort(int s)
                      throws IOException

Specified by:

• writeShort in interface DataOutput

Parameters:

• s - 출력할 정보.

Throws:

• IOException -

writeChar

public final void writeChar(int c)
                     throws IOException

Specified by:

• writeChar in interface DataOutput

Parameters:

• c - 출력할 정보.

Throws:

• IOException -

writeInt

public final void writeInt(int i)
                    throws IOException

Specified by:

• writeInt in interface DataOutput

Parameters:

• i - 출력할 정보.

Throws:

• IOException -

writeLong

public final void writeLong(long l)
                     throws IOException

Specified by:

• writeLong in interface DataOutput

Parameters:

• l - 출력할 정보.

Throws:

• IOException -

writeFloat

public final void writeFloat(float v)
                      throws IOException

Specified by:

• writeFloat in interface DataOutput

writeDouble

public final void writeDouble(double v)
                       throws IOException

Specified by:

• writeDouble in interface DataOutput

writeChars

public final void writeChars(String s)
                      throws IOException

Specified by:

• writeChars in interface DataOutput

Parameters:

• s - 출력할 문자열.

Throws:

• IOException -

writeUTF

public final void writeUTF(String s)
                    throws IOException

Specified by:

• writeUTF in interface DataOutput

Parameters:

• str - 출력할 문자열.

Throws:

• IOException -## 생성자 상세

DataOutputStream

public DataOutputStream(OutputStream out)

Parameters:

• out - 실제 바이트 정보가 출력될 출력 스트림.

write

public void write(int b)
           throws IOException

Specified by:

• write in interface DataOutput

Overrides:

• write in class OutputStream

Parameters:

• b - 출력할 정보.

Throws:

• IOException -

write

public void write(byte[] buf,
                  int offset,
                  int len)
           throws IOException

Specified by:

• write in interface DataOutput

Overrides:

• write in class OutputStream

Parameters:

• len - 출력할 갯수.

Throws:

• IOException -

flush

public void flush()
           throws IOException

Overrides:

• flush in class OutputStream
• Following copied from class: java.io.OutputStream

Throws:

• IOException -

close

public void close()
           throws IOException

Overrides:

• close in class OutputStream

Throws:

• IOException -

writeBoolean

public final void writeBoolean(boolean b)
                        throws IOException

Specified by:

• writeBoolean in interface DataOutput

Parameters:

• b - 출력할 boolean변수.

Throws:

• IOException -

writeByte

public final void writeByte(int b)
                     throws IOException

Specified by:

• writeByte in interface DataOutput

Parameters:

• b - 출력할 정보.

Throws:

• IOException -

writeShort

public final void writeShort(int s)
                      throws IOException

Specified by:

• writeShort in interface DataOutput

Parameters:

• s - 출력할 정보.

Throws:

• IOException -

writeChar

public final void writeChar(int c)
                     throws IOException

Specified by:

• writeChar in interface DataOutput

Parameters:

• c - 출력할 정보.

Throws:

• IOException -

writeInt

public final void writeInt(int i)
                    throws IOException

Specified by:

• writeInt in interface DataOutput

Parameters:

• i - 출력할 정보.

Throws:

• IOException -

writeLong

public final void writeLong(long l)
                     throws IOException

Specified by:

• writeLong in interface DataOutput

Parameters:

• l - 출력할 정보.

Throws:

• IOException -

writeFloat

public final void writeFloat(float v)
                      throws IOException

Specified by:

• writeFloat in interface DataOutput

writeDouble

public final void writeDouble(double v)
                       throws IOException

Specified by:

• writeDouble in interface DataOutput

writeChars

public final void writeChars(String s)
                      throws IOException

Specified by:

• writeChars in interface DataOutput

Parameters:

• s - 출력할 문자열.

Throws:

• IOException -

writeUTF

public final void writeUTF(String s)
                    throws IOException

Specified by:

• writeUTF in interface DataOutput

Parameters:

• str - 출력할 문자열.

Throws:

• IOException -## 메서드 상세

write

public void write(int b)
           throws IOException

Specified by:

• write in interface DataOutput

Overrides:

• write in class OutputStream

Parameters:

• b - 출력할 정보.

Throws:

• IOException -

write

public void write(byte[] buf,
                  int offset,
                  int len)
           throws IOException

Specified by:

• write in interface DataOutput

Overrides:

• write in class OutputStream

Parameters:

• len - 출력할 갯수.

Throws:

• IOException -

flush

public void flush()
           throws IOException

Overrides:

• flush in class OutputStream
• Following copied from class: java.io.OutputStream

Throws:

• IOException -

close

public void close()
           throws IOException

Overrides:

• close in class OutputStream

Throws:

• IOException -

writeBoolean

public final void writeBoolean(boolean b)
                        throws IOException

Specified by:

• writeBoolean in interface DataOutput

Parameters:

• b - 출력할 boolean변수.

Throws:

• IOException -

writeByte

public final void writeByte(int b)
                     throws IOException

Specified by:

• writeByte in interface DataOutput

Parameters:

• b - 출력할 정보.

Throws:

• IOException -

writeShort

public final void writeShort(int s)
                      throws IOException

Specified by:

• writeShort in interface DataOutput

Parameters:

• s - 출력할 정보.

Throws:

• IOException -

writeChar

public final void writeChar(int c)
                     throws IOException

Specified by:

• writeChar in interface DataOutput

Parameters:

• c - 출력할 정보.

Throws:

• IOException -

writeInt

public final void writeInt(int i)
                    throws IOException

Specified by:

• writeInt in interface DataOutput

Parameters:

• i - 출력할 정보.

Throws:

• IOException -

writeLong

public final void writeLong(long l)
                     throws IOException

Specified by:

• writeLong in interface DataOutput

Parameters:

• l - 출력할 정보.

Throws:

• IOException -

writeFloat

public final void writeFloat(float v)
                      throws IOException

Specified by:

• writeFloat in interface DataOutput

writeDouble

public final void writeDouble(double v)
                       throws IOException

Specified by:

• writeDouble in interface DataOutput

writeChars

public final void writeChars(String s)
                      throws IOException

Specified by:

• writeChars in interface DataOutput

Parameters:

• s - 출력할 문자열.

Throws:

• IOException -

writeUTF

public final void writeUTF(String s)
                    throws IOException

Specified by:

• writeUTF in interface DataOutput

Parameters:

• str - 출력할 문자열.

Throws:

• IOException -

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