This is a quick reference of constructors for various Stream classes.

You can quickly find out what all type of resources or streams a Stream class can be attached with. For instance, a BufferedReader do not have a constructor that can accept an InputStream, however an InputStreamReader has such a constructor that can accept an InputStream. So to use an InputStream such as System.in, we can attach it to an InputStreamReader and then attach the InputStreamReader to a BufferedReader as:

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

InputStream Classes

AudioInputStream

• AudioInputStream(InputStream stream, AudioFormat format, long length)

• AudioInputStream(TargetDataLine line)

ByteArrayInputStream

• ByteArrayInputStream(byte[] buf)

• ByteArrayInputStream(byte[] buf, int offset, int length)

FileInputStream

• FileInputStream(File file)

• FileInputStream(FileDescriptor fdObj)

• FileInputStream(String name)

FilterInputStream

• FilterInputStream(InputStream in)

ObjectInputStream

• ObjectInputStream()

• ObjectInputStream(InputStream in)

PipedInputStream

• PipedInputStream()

• PipedInputStream(int pipeSize)

• PipedInputStream(PipedOutputStream src)

• PipedInputStream(PipedOutputStream src, int pipeSize)

SequenceInputStream

• SequenceInputStream(Enumeration<? extends InputStream> e)

• SequenceInputStream(InputStream s1, InputStream s2)

FilterInputStream Subclasses

BufferedInputStream

• BufferedInputStream(InputStream in)

• BufferedInputStream(InputStream in, int size)

CheckedInputStream

• CheckedInputStream(InputStream in, Checksum cksum)

CipherInputStream

• CipherInputStream(InputStream is)

• CipherInputStream(InputStream is, Cipher c)

DataInputStream

• DataInputStream(InputStream in)

DeflaterInputStream

• DeflaterInputStream(InputStream in)

• DeflaterInputStream(InputStream in, Deflater defl)

• DeflaterInputStream(InputStream in, Deflater defl, int bufLen)

DigestInputStream

• DigestInputStream(InputStream stream, MessageDigest digest)

InflaterInputStream

• InflaterInputStream(InputStream in)

• InflaterInputStream(InputStream in, Inflater inf)

• InflaterInputStream(InputStream in, Inflater inf, int size)

ProgressMonitorInputStream

• ProgressMonitorInputStream(Component parentComponent, Object message, InputStream in)

PushbackInputStream

• PushbackInputStream(InputStream in)

• PushbackInputStream(InputStream in, int size)

OutputStream Classes

ByteArrayOutputStream

• ByteArrayOutputStream()

• ByteArrayOutputStream(int size)

FileOutputStream

• FileOutputStream(File file)

• FileOutputStream(File file, boolean append)

• FileOutputStream(FileDescriptor fdObj)

• FileOutputStream(String name)

• FileOutputStream(String name, boolean append)

FilterOutputStream

• FilterOutputStream(OutputStream out)

ObjectOutputStream

• ObjectOutputStream()

• ObjectOutputStream(OutputStream out)

OutputStream

• OutputStream()

PipedOutputStream

• PipedOutputStream()

• PipedOutputStream(PipedInputStream snk)

FilterOutputStream Subclasses

PrintStream

• PrintStream(File file)

• PrintStream(File file, String csn)

• PrintStream(OutputStream out)

• PrintStream(OutputStream out, boolean autoFlush)

• PrintStream(OutputStream out, boolean autoFlush, String encoding)

• PrintStream(String fileName)

• PrintStream(String fileName, String csn)

BufferedOutputStream

• BufferedOutputStream(OutputStream out)

• BufferedOutputStream(OutputStream out, int size)

CheckedOutputStream

• CheckedOutputStream(OutputStream out, Checksum cksum)

CipherOutputStream

• CipherOutputStream(OutputStream os)

• CipherOutputStream(OutputStream os, Cipher c)

DataOutputStream

• DataOutputStream(OutputStream out)

DeflaterOutputStream

• DeflaterOutputStream(OutputStream out)

• DeflaterOutputStream(OutputStream out, boolean syncFlush)

• DeflaterOutputStream(OutputStream out, Deflater def)

• DeflaterOutputStream(OutputStream out, Deflater def, boolean syncFlush)

• DeflaterOutputStream(OutputStream out, Deflater def, int size)

• DeflaterOutputStream(OutputStream out, Deflater def, int size, boolean syncFlush)

DigestOutputStream

• DigestOutputStream(OutputStream stream, MessageDigest digest)

InflaterOutputStream

• InflaterOutputStream(OutputStream out)

• InflaterOutputStream(OutputStream out, Inflater infl)

• InflaterOutputStream(OutputStream out, Inflater infl, int bufLen)

Reader Classes

BufferedReader

• BufferedReader(Reader in)

• BufferedReader(Reader in, int sz)

CharArrayReader

• CharArrayReader(char[] buf)

• CharArrayReader(char[] buf, int offset, int length)

FilterReader

• FilterReader(Reader in)

InputStreamReader

• InputStreamReader(InputStream in)

• InputStreamReader(InputStream in, Charset cs)

• InputStreamReader(InputStream in, CharsetDecoder dec)

• InputStreamReader(InputStream in, String charsetName)

PipedReader

• PipedReader()

• PipedReader(int pipeSize)

• PipedReader(PipedWriter src)

• PipedReader(PipedWriter src, int pipeSize)

StringReader

StringReader(String s)

LineNumberReader

• LineNumberReader(Reader in)

• LineNumberReader(Reader in, int sz)

PushbackReader

• PushbackReader(Reader in)

• PushbackReader(Reader in, int size)

FileReader

• FileReader(File file)

• FileReader(FileDescriptor fd)

• FileReader(String fileName)

Writer Classes

BufferedWriter

• BufferedWriter(Writer out)

• BufferedWriter(Writer out, int sz)

CharArrayWriter

• CharArrayWriter()

• CharArrayWriter(int initialSize)

FilterWriter

• FilterWriter(Writer out)

OutputStreamWriter

• OutputStreamWriter(OutputStream out)

• OutputStreamWriter(OutputStream out, Charset cs)

• OutputStreamWriter(OutputStream out, CharsetEncoder enc)

• OutputStreamWriter(OutputStream out, String charsetName)

PipedWriter

• PipedWriter()

• PipedWriter(PipedReader snk)

PrintWriter

• PrintWriter(File file)

• PrintWriter(File file, String csn)

• PrintWriter(OutputStream out)

• PrintWriter(OutputStream out, boolean autoFlush)

• PrintWriter(String fileName)

• PrintWriter(String fileName, String csn)

• PrintWriter(Writer out)

• PrintWriter(Writer out, boolean autoFlush)

StringWriter

• StringWriter()

• StringWriter(int initialSize)

FileWriter

• FileWriter(File file)

• FileWriter(File file, boolean append)

• FileWriter(FileDescriptor fd)

• FileWriter(String fileName)

• FileWriter(String fileName, boolean append)

You can refer to oracle documentation for more details and explanations. Just do a google search (e.g. 'FileReader java 7') and you can find the oracle documentation for the class.