java.io. InputStreann Class 该抽象类作为所有输入字节流类的基类,声 明用于读取字节流数据的通用方法 public abstract int reado public int read (bytell buf, int offset, int count) public int read(bytel buf) public long skip(long count public int available( public void closedjava.io.InputStream Class • 该抽象类作为所有输入字节流类的基类，声 明用于读取字节流数据的通用方法： public abstract int read() public int read(byte[] buf, int offset, int count) public int read(byte[] buf) public long skip(long count) public int available() public void close()