SequenceInputStream Java is used to copy a number of source files to one destination file. Many input streams are concatenated and converted into a single stream and copied at a stretch to the destination file. Merging of multiple files can be done easily in Java using SequenceInputStream. SequenceInputStream is a good example to show that …
File class Changing File Properties Summary: By the end of this tutorial "File class Changing File Properties", you will come to know how to create and delete a file or create a new directory etc using Java code. After retrieving the properties of a file with File class, let us attempt to change the properties …
String Array Object String Array Summary: By the end of this tutorial "String Array Object String Array", you will come to know how to create string array and converting object array to string array. String arrays play very important role in any language coding. In the following program, string arrays are created in three ways. …
Sometimes it is very much required in coding to convert numbers to words and print them as can be seen in Railway reservation tickets. Explained in "Converting Numbers to Words" with Java syntax. Following program illustrates "Converting Numbers to Words". import java.util.*; public class YourNumberMyWord { public void pw(int n,String ch) { String one[]={” “,” …
In the filter streams Java category, the java.io package comes with 4 classes – FilterInputStream and FilterOutputStream on byte stream side and FilterReader and FilterWriter on character streams side. All the subclasses of these 4 classes are known as filter streams. What are filter input streams? As you can see in the following hierarchies, there …
Byte streams Character streams File copying is done, in JDK 1.0, with byte streams. Byte streams can read or write the files containing ASCII characters that range from 0 to 255. That is, byte streams can copy the files containing English letters only but not of other languages. If the file contains other than English …
Byte streams vs Character streams: Character streams Advantages over Byte streams Byte streams read bytes that fall under ASCII range and character streams read Unicode characters that include characters of many international languages. Being latest, introduced with JDK 1.1, the character streams are advantageous over byte streams like the inclusion of newLine() method (that is …
PrintWriter Example Formatting Data Organizing or customizing the data, the way user wants, is known as formatting the data. PrintWriter class comes with methods to format the data and write to the output stream (not only DOS prompt) as text. This class also contains the methods of PrintStream like print() and println(). This class cannot …
Breaking a string or stream into meaningful independent words is known as tokenization. Tokenization is a common practice to tool developers. java.util package includes StringTokenizer which tokenizes a string into independent words. For StringTokenizer, the source is a string. There comes a similar tokenizer, StreamTokenize with java.io package for which source is a stream. Here, …
Java Convert Byte Array Char Array Summary: Explained in this tutorial "Java Convert Byte Array Char Array", converting in between byte array and char array in simple Java code. Sometimes it is very much required to convert byte array to char array and vice versa in coding. Following program illustrates the conversion of byte array …
DataInputStream and DataOutputStream are high-level classes as they are the subclasses of FilterInputStream and FilterOutputStream. These streams' extra functionality is that they can read or write integers, doubles and lines at a time, instead of byte by byte. This increases the performance to some extent; instead of reading and writing byte by byte with FileInputStream …
Give Line Numbers LineNumberInputStream Summary: By the end of this tutorial "Give Line Numbers LineNumberInputStream", you will come to know how to give line numbers using Java I/O streams. LineNumberInputStream is a subclass of FilterInputStream stream. We know each filter stream adds some extra functionality. The LineNumberInputStream does the extra work of adding line numbers …
File Copy Tutorial Java: File copying operation, in Java, can be done in 5 steps broadly. Open the source file in read mode (say, using FileInputStream constructor) Open the destination file in write mode (say, using FileOutputStream constructor) Read data from the source file (say, using read() method) Write data to the destination file (say, …
Almost all the java.io package classes are streams. A stream is a carrier of data. To carry data, even sockets, use I/O streams. Infact, the methods getInputStream() and getOutputStream() of java.net.Socket returns an object of InputStream class and OutputStream class. InputStreamReader and OutputStreamWriter are non-stream classes. They are not streams; they are converters or wrappers …
A file can be read either sequentially (continuously) or randomly (here and there). So far, in all the programs, what we have done is sequential access, starting from the beginning of the file to the end of the file. Or we have skipped some bytes in a file and read the remaining bytes of the …
Data can be stored on a computer system, as per the code requirements, in two ways, either permanently or temporarily. Temporary storage can be accomplished by storing the data in datastructures or instance variables. The data is temporary because it is stored in RAM. For a permanent storage, the data should be stored on the …
Chaining Streams Java Java comes with low-level byte streams and high-level byte streams and similarly low-level and high-level character streams. Sub classes of FilterInputStream and FilterOutputStream are known as high-level streams. There are four high-level streams on input streams side – LineNumberInputStream, DataInputStream, BufferedInputStream and PushbackInputStream. The job of high-level streams is to add extra …
Closeable and Flushable interfaces were introduced with JDK 1.5 version and part of java.io package. 1. Closeable interface (of Closeable Flushable Java) The Closeable interface includes only one abstract method, close(). When close() method is called, the system resources held by the stream object are released and can be used by other part of the …
PipedInputStream PipedOutputStream – Transferring Data between Processes What is pipe? A pipe is a transferring channel though which data flows. Pipe is a conduit to send data of an output stream to an input stream. Generally, a thread connected to PipedOutputStream sends data to another thread connected to PipedInputStream. To transfer data between two running …
One of the features of Java is "robust". It does not allow the programmer, to the maximum extent, to commit mistakes. For example, giving the size of the array in array initialization is a compilation error. Java designers included many methods in Scanner class intended to check the input whether it is a byte, short, …
