Java | The Developer's Info

Using Sequence Input Stream in Java

By Oleg Mazurashu, on April 19th, 2010%

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 data . . . → Read More: Using Sequence Input Stream in Java

Java SE Development Kit 6 Update 20 is available

By Oleg Mazurashu, on April 16th, 2010%

You can download it from this link.
Details you can find on Release . . . → Read More: Java SE Development Kit 6 Update 20 is available

Java SE Development Kit 6 Update 19 is available

By Oleg Mazurashu, on March 30th, 2010%

You can download it from this link.
Details you can find on Release . . . → Read More: Java SE Development Kit 6 Update 19 is available

Using system properties in Java

By Oleg Mazurashu, on March 25th, 2010%

The System class maintains a Properties object that describes the configuration of the current working environment. System properties include information about the current user, the current version of the Java runtime, and the character used to separate components of a file path name.
In this post I am going to show simple example which shows how to . . . → Read More: Using system properties in Java

Getting system environment variables in Java

By Oleg Mazurashu, on March 25th, 2010%

I am going to demonstrate example which shows how to get environment variables from Java code

import java.io.IOException;
import java.util.Map;

/**
* This class shows how to get all environment variables and how to get specific environment variable
* @author The Developer’s Info
*/
public class Main {

public static void main(String[] args) throws IOException {
. . . → Read More: Getting system environment variables in Java

Using Properties in Java

By Oleg Mazurashu, on March 25th, 2010%

Java has great API for working with properties.
In this post I am going to show example which shows how to work with properties with Properties class.
In my work I very often use properties and xml files for configuration.
Example will show how to load properties from property file, how to read them, how to write to other property file and how to set the new properties. Continue reading Using Properties in Java

Using Data Streams in Java

By Oleg Mazurashu, on March 22nd, 2010%

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 to move data between platforms that may use different native formats for integers or floating-point numbers.
In this post I am going to show how to use data streams in work. Continue reading Using Data Streams in Java

Multitargeting output streams in Java

By Oleg Mazurashu, on March 15th, 2010%

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 extends FilterOutputStream {

private OutputStream . . . → Read More: Multitargeting output streams in Java

Using PushBackInputStream in Java

By Oleg Mazurashu, on March 15th, 2010%

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:

import java.io.IOException;
import java.io.PushbackInputStream;

/**
. . . → Read More: Using PushBackInputStream in Java

Using buffered streams in Java

By Oleg Mazurashu, on March 15th, 2010%

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 stream. Also, buffered output streams store data in an internal byte array until the buffer is full or the stream is flushed. Then the data is written out to the underlying output stream in one swoop. In situations where it’s almost as fast to read or write several hundred bytes from the underlying stream as it is to read or write a single byte, a buffered stream can provide a significant performance boost. Continue reading Using buffered streams in Java

The Developer's Info

Using Sequence Input Stream in Java

Java SE Development Kit 6 Update 20 is available

Java SE Development Kit 6 Update 19 is available

Using system properties in Java

Getting system environment variables in Java

Using Properties in Java

Using Data Streams in Java

Multitargeting output streams in Java

Using PushBackInputStream in Java

Using buffered streams in Java

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