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
1protected Writer()
This creates a new character-stream writer whose critical sections will synchronize on the writer itself.
2protected 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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