Java.io.Writer Class


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Introduction

The Java.io.Writer class is a abstract class for writing to character streams.

Class declaration

Following is the declaration for Java.io.Writer class:

public abstract class Writer
  extends Object
    implements Appendable, Closeable, Flushable

Field

Following are the fields for Java.io.Writer class:

  • protected Object lock -- This is the object used to synchronize operations on this stream.

Class constructors

S.N. Constructor & Description
1

protected Writer()

This creates a new character-stream writer whose critical sections will synchronize on the writer itself.

2

protected Writer(Object lock)

This creates a new character-stream writer whose critical sections will synchronize on the given object.

Class methods

S.N. Method & Description
1

Writer append(char c)

This method appends the specified character to this writer.

2

Writer append(CharSequence csq)

This method appends the specified character sequence to this writer.

3

Writer append(CharSequence csq, int start, int end)

This method appends a subsequence of the specified character sequence to this writer.

4

abstract void close()

This method loses the stream, flushing it first.

5

abstract void flush()

This method flushes the stream.

6

void write(char[] cbuf)

This method writes an array of characters.

7

abstract void write(char[] cbuf, int off, int len)

This method writes a portion of an array of characters.

8

void write(int c)

This method writes a single character.

9

void write(String str)

This method writes a string.

10

void write(String str, int off, int len)

This method writes a portion of a string.

Methods inherited

This class inherits methods from the following classes:

  • Java.io.Object


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