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📜  Java.io.Reader类

📅  最后修改于: 2020-11-15 02:51:43             🧑  作者: Mango

介绍

Java.io.Reader类是用于读取字符流的抽象类。

类声明

以下是Java.io.Reader类的声明-

public class Reader
   extends Object
      implements DataOutput, DataInput, Closeable

领域

以下是Java.io.Reader类的字段-

  • protected Object lock-这是用于同步此流上的操作的对象。

类的构造函数

Sr.No. Constructor & Description
1

protected Reader()

This creates a new character-stream reader whose critical sections will synchronize on the reader itself.
2

protected Reader(Object lock)

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

类方法

Sr.No. Method & Description
1 abstract void close()

This method closes the stream and releases any system resources associated with it.
2 void mark(int readAheadLimit)

This method marks the present position in the stream.
3 boolean markSupported()

This method tells whether this stream supports the mark() operation.
4 int read()

This method reads a single character.
5 int read(char[] cbuf)

This method reads characters into an array.
6 abstract int read(char[] cbuf, int off, int len)

This method reads characters into a portion of an array.
7 int read(CharBuffer target)

This method attempts to read characters into the specified character buffer.
8 boolean ready()

This method tells whether this stream is ready to be read.
9 void reset()

This method resets the stream.
10 long skip(long n)

This method skips characters.

方法继承

此类从以下类继承方法-

  • Java对象