The Developer's Info » Java I/O

Using Sequence Input Stream in Java

Oleg Mazurashu — Mon, 19 Apr 2010 12:57:05 +0000

In this post I am going to show you how to use SequenceInputStream in Java. A SequenceInputStream first reads all the bytes from the first stream in the sequence, then all the bytes from the second, third and so on. When the end of one stream is reached, that stream is closed and the next . . . → Read More: Using Sequence Input Stream in Java No related posts.

Using Data Streams in Java

Oleg Mazurashu — Mon, 22 Mar 2010 14:50:19 +0000

Data streams read and write strings, integers, floating-point numbers, and other data. The DataInputStream and DataOutputStream classes read and write the primitive Java data types (boolean, int, double, etc.) and strings in a particular, well-defined, platform-independent format. Since DataInputStream and DataOutputStream use the same formats, they’re complementary. These classes are especially useful when you need . . . → Read More: Using Data Streams in Java No related posts.

Multitargeting output streams in Java

Oleg Mazurashu — Mon, 15 Mar 2010 20:33:07 +0000

I want to show how I implemented filter output stream that send data to multiple underlying streams. It is very easy. I need output stream for this

import java.io.FilterOutputStream; import java.io.IOException; import java.io.OutputStream; /** * New filter stream which helps to write data in 2 streams * @author The Developer's Info */ public class MultitargetOutputStream . . . → Read More: Multitargeting output streams in Java No related posts.

Using PushBackInputStream in Java

Oleg Mazurashu — Mon, 15 Mar 2010 19:15:23 +0000

The PushbackInputStream class provides a pushback buffer so a program can “unread” bytes. In other words, it can add bytes to the stream and then read them. This class allows to add data to the stream while they’re reading it. The next time data is read from the stream, the unread bytes are reread. Example:

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Using buffered streams in Java

Oleg Mazurashu — Mon, 15 Mar 2010 18:50:09 +0000

Buffered input streams read more data than they initially need into a buffer (an internal array of bytes). When one of the stream’s read() methods is invoked, data is removed from the buffer rather than from the underlying stream. When the buffer runs out of data, the buffered stream refills its buffer from the underlying . . . → Read More: Using buffered streams in Java No related posts.

Using Filter Streams in Java

Oleg Mazurashu — Mon, 15 Mar 2010 17:15:42 +0000

Filter input streams read data from a preexisting input stream such as a FileInputStream and have an opportunity to work with or change the data before it is delivered to the client program. Filter output streams write data to a preexisting output stream such as a FileOutputStream and have an opportunity to work with or . . . → Read More: Using Filter Streams in Java No related posts.

Using URLConnection in Java

Oleg Mazurashu — Mon, 08 Mar 2010 12:04:50 +0000

URLConnections are closely related to URLs. Indeed, you get a reference to a URLConnection by using the openConnection() method of an URL object. In many ways, the URL class is only a wrapper around the URLConnection class. URLConnections provide more control over the communication between the client and the server. In particular, URLConnections provide not . . . → Read More: Using URLConnection in Java No related posts.

Using URL in Java

Oleg Mazurashu — Mon, 01 Mar 2010 19:32:57 +0000

Here I am going to show example which works with URL. Each URL(Uniform Resource Locator) unambiguously identifies the location of a resource on the Internet. Example shows how to connect to an URL, download its data and show it in console via System.out

import java.io.IOException; import java.io.InputStream; import java.net.MalformedURLException; import java.net.URL; /** * This class . . . → Read More: Using URL in Java No related posts.

Getting separator symbol in Java

Oleg Mazurashu — Thu, 25 Feb 2010 15:43:30 +0000

This snippet of code allows to get symbol which represents separator in your file-system:

System.getProperty("file.separator");

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Writing files in Java

Oleg Mazurashu — Thu, 25 Feb 2010 15:12:40 +0000

I am going to show example which shows how to write a file in Java. If you want to write some file you should start with FileOutputStream. This class is a concrete subclass of OutputStream. Example:

package tutorial; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; /** * This class shows how to write a . . . → Read More: Writing files in Java No related posts.