Java字节流--输出流OutputStream和输入流InputStream

OutputStream和InputStream都是抽象类

OutputStream定义和InputStream定义

OutputStream	InputStream
public abstract class OutputStream extends Object implements Closeable, Flushable	public abstract class InputStream extends Object implements Closeable

常用的两个实现子类

FileOutputStream和FileInputStream

	FileOutputStream	FileInputStream
定义	public class FilterInputStream extends InputStream	public class FilterInputStream extends InputStream
构造方法
常用方法	void close()  void write(byte[] b)  void write(byte[] b, int off, int len)  void write(int b)	void close() int read()  int read(byte[] b)  int read(byte[] b, int off, int len)