IO.....
java.io.*
使用参考：http://www.cnblogs.com/rollenholt/archive/2011/09/11/2173787.html
类分层结构
- java.lang.Object
- java.io.File (implements java.lang.Comparable<T>, java.io.Serializable)
- java.io.FileDescriptor
- java.io.InputStream (implements java.io.Closeable)
- java.io.ByteArrayInputStream
- java.io.FileInputStream
- java.io.FilterInputStream
- java.io.BufferedInputStream
- java.io.DataInputStream (implements java.io.DataInput)
- java.io.LineNumberInputStream
- java.io.PushbackInputStream
- java.io.ObjectInputStream (implements java.io.ObjectInput, java.io.ObjectStreamConstants)
- java.io.PipedInputStream
- java.io.SequenceInputStream
- java.io.StringBufferInputStream
- java.io.ObjectInputStream.GetField
- java.io.ObjectOutputStream.PutField
- java.io.ObjectStreamClass (implements java.io.Serializable)
- java.io.ObjectStreamField (implements java.lang.Comparable<T>)
- java.io.OutputStream (implements java.io.Closeable, java.io.Flushable)
- java.io.ByteArrayOutputStream
- java.io.FileOutputStream
- java.io.FilterOutputStream
- java.io.BufferedOutputStream
- java.io.DataOutputStream (implements java.io.DataOutput)
- java.io.PrintStream (implements java.lang.Appendable, java.io.Closeable)
- java.io.ObjectOutputStream (implements java.io.ObjectOutput, java.io.ObjectStreamConstants)
- java.io.PipedOutputStream
- java.security.Permission (implements java.security.Guard, java.io.Serializable)
- java.security.BasicPermission (implements java.io.Serializable)
- java.io.SerializablePermission
- java.io.FilePermission (implements java.io.Serializable)
- java.security.BasicPermission (implements java.io.Serializable)
- java.io.RandomAccessFile (implements java.io.Closeable, java.io.DataInput, java.io.DataOutput)
- java.io.Reader (implements java.io.Closeable, java.lang.Readable)
- java.io.BufferedReader
- java.io.LineNumberReader
- java.io.CharArrayReader
- java.io.FilterReader
- java.io.PushbackReader
- java.io.InputStreamReader
- java.io.FileReader
- java.io.PipedReader
- java.io.StringReader
- java.io.BufferedReader
- java.io.StreamTokenizer
- java.lang.Throwable (implements java.io.Serializable)
- java.lang.Exception
- java.io.IOException
- java.io.CharConversionException
- java.io.EOFException
- java.io.FileNotFoundException
- java.io.InterruptedIOException
- java.io.ObjectStreamException
- java.io.InvalidClassException
- java.io.InvalidObjectException
- java.io.NotActiveException
- java.io.NotSerializableException
- java.io.OptionalDataException
- java.io.StreamCorruptedException
- java.io.WriteAbortedException
- java.io.SyncFailedException
- java.io.UnsupportedEncodingException
- java.io.UTFDataFormatException
- java.io.IOException
- java.lang.Exception
- java.io.Writer (implements java.lang.Appendable, java.io.Closeable, java.io.Flushable)
- java.io.BufferedWriter
- java.io.CharArrayWriter
- java.io.FilterWriter
- java.io.OutputStreamWriter
- java.io.FileWriter
- java.io.PipedWriter
- java.io.PrintWriter
- java.io.StringWriter
接口分层结构
- java.io.Closeable
- java.io.DataInput
- java.io.ObjectInput
- java.io.DataOutput
- java.io.ObjectOutput
- java.io.FileFilter
- java.io.FilenameFilter
- java.io.Flushable
- java.io.ObjectInputValidation
- java.io.ObjectStreamConstants
- java.io.Serializable
- java.io.Externalizable
NIO.....
java.nio.*
使用参考：http://www.cnblogs.com/rollenholt/archive/2011/09/29/2195730.html
类分层结构
- java.lang.Object
- java.nio.Buffer
- java.nio.ByteBuffer (implements java.lang.Comparable<T>)
- java.nio.MappedByteBuffer
- java.nio.CharBuffer (implements java.lang.Appendable, java.lang.CharSequence, java.lang.Comparable<T>, java.lang.Readable)
- java.nio.DoubleBuffer (implements java.lang.Comparable<T>)
- java.nio.FloatBuffer (implements java.lang.Comparable<T>)
- java.nio.IntBuffer (implements java.lang.Comparable<T>)
- java.nio.LongBuffer (implements java.lang.Comparable<T>)
- java.nio.ShortBuffer (implements java.lang.Comparable<T>)
- java.nio.ByteBuffer (implements java.lang.Comparable<T>)
- java.nio.ByteOrder
- java.lang.Throwable (implements java.io.Serializable)
- java.lang.Exception
- java.lang.RuntimeException
- java.nio.BufferOverflowException
- java.nio.BufferUnderflowException
- java.lang.IllegalStateException
- java.nio.InvalidMarkException
- java.lang.UnsupportedOperationException
- java.nio.ReadOnlyBufferException
- java.lang.RuntimeException
- java.lang.Exception
- java.nio.Buffer
