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Added in API level 1

Summary: Inherited Fields | Ctors | Methods | Inherited Methods | [Expand All]

CheckedInputStream

public class CheckedInputStream
extends FilterInputStream

java.lang.Object
↳	java.io.InputStream
	↳	java.io.FilterInputStream
		↳	java.util.zip.CheckedInputStream

An input stream that also maintains a checksum of the data being read. The checksum can then be used to verify the integrity of the input data.

See also:

Checksum

Summary

Inherited fields

From class


    java.io.FilterInputStream

Public constructors
`CheckedInputStream(InputStream in, Checksum cksum)` Creates an input stream using the specified Checksum.

Public methods
`Checksum`	`getChecksum()` Returns the Checksum for this input stream.
`int`	`read()` Reads a byte.
`int`	`read(byte[] buf, int off, int len)` Reads into an array of bytes.
`long`	`skip(long n)` Skips specified number of bytes of input.

Inherited methods

From class


  
    java.io.FilterInputStream

`int`	`available()` Returns an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking by the next caller of a method for this input stream.
`void`	`close()` Closes this input stream and releases any system resources associated with the stream.
`void`	`mark(int readlimit)` Marks the current position in this input stream.
`boolean`	`markSupported()` Tests if this input stream supports the `mark` and `reset` methods.
`int`	`read()` Reads the next byte of data from this input stream.
`int`	`read(byte[] b, int off, int len)` Reads up to `len` bytes of data from this input stream into an array of bytes.
`int`	`read(byte[] b)` Reads up to `byte.length` bytes of data from this input stream into an array of bytes.
`void`	`reset()` Repositions this stream to the position at the time the `mark` method was last called on this input stream.
`long`	`skip(long n)` Skips over and discards `n` bytes of data from the input stream.

From class


  
    java.io.InputStream

`int`	`available()` Returns an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking by the next invocation of a method for this input stream.
`void`	`close()` Closes this input stream and releases any system resources associated with the stream.
`void`	`mark(int readlimit)` Marks the current position in this input stream.
`boolean`	`markSupported()` Tests if this input stream supports the `mark` and `reset` methods.
`abstract int`	`read()` Reads the next byte of data from the input stream.
`int`	`read(byte[] b, int off, int len)` Reads up to `len` bytes of data from the input stream into an array of bytes.
`int`	`read(byte[] b)` Reads some number of bytes from the input stream and stores them into the buffer array `b`.
`void`	`reset()` Repositions this stream to the position at the time the `mark` method was last called on this input stream.
`long`	`skip(long n)` Skips over and discards `n` bytes of data from this input stream.

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


  
    java.io.Closeable

From interface


  
    java.lang.AutoCloseable

Public constructors

CheckedInputStream

Added in API level 1

CheckedInputStream (InputStream in, 
                Checksum cksum)

Creates an input stream using the specified Checksum.

Parameters
`in`	`InputStream`: the input stream
`cksum`	`Checksum`: the Checksum

Public methods

getChecksum

Added in API level 1

Checksum getChecksum ()

Returns the Checksum for this input stream.

Returns
`Checksum`	the Checksum value

read

Added in API level 1

int read ()

Reads a byte. Will block if no input is available.

Returns
`int`	the byte read, or -1 if the end of the stream is reached.

Throws
`IOException`	if an I/O error has occurred

read

Added in API level 1

int read (byte[] buf, 
                int off, 
                int len)

Reads into an array of bytes. If len is not zero, the method blocks until some input is available; otherwise, no bytes are read and 0 is returned.

Parameters
`buf`	`byte`: the buffer into which the data is read
`off`	`int`: the start offset in the destination array `b`
`len`	`int`: the maximum number of bytes read

Returns
`int`	the actual number of bytes read, or -1 if the end of the stream is reached.

Throws
`NullPointerException`	If `buf` is `null`.
`IndexOutOfBoundsException`	If `off` is negative, `len` is negative, or `len` is greater than `buf.length - off`
`IOException`	if an I/O error has occurred

skip

Added in API level 1

long skip (long n)

Skips specified number of bytes of input.

Parameters
`n`	`long`: the number of bytes to skip

Returns
`long`	the actual number of bytes skipped

Throws
`IOException`	if an I/O error has occurred

Interfaces

Classes

Exceptions

Errors

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CheckedInputStream

Summary

Inherited fields

Public constructors

Public methods

Inherited methods

Public constructors

CheckedInputStream

Public methods

getChecksum

read

read

skip