What is getInputStream in Java?

Java Socket getInputStream() method

The getOutputStream() method of Java Socket class returns an output stream for the given socket. If you close the returned OutputStream then it will close the linked socket.

One may also ask, what is URLConnection in Java? Java URLConnection class. The Java URLConnection class represents a communication link between the URL and the application. This class can be used to read and write data to the specified resource referred by the URL.

Also to know, what is readUTF in Java?

readUTF() method reads in a string that has been encoded using a modified UTF-8 format. The string of character is decoded from the UTF and returned as String.

What is the purpose of DataInputStream?

Java DataInputStream class allows an application to read primitive data from the input stream in a machine-independent way. Java application generally uses the data output stream to write data that can later be read by a data input stream.

What is readLine in Java?

The readLine(String fmt, Object args) method is a static method of Java Console class. It is used to provide a formatted prompt, then reads a single line of text from the console.

What is socket in Java?

A socket in Java is one endpoint of a two-way communication link between two programs running on the network. A socket is bound to a port number so that the TCP layer can identify the application that data is destined to be sent to. An endpoint is a combination of an IP address and a port number.

What is BufferedReader in Java?

Why use BufferedReader and BufferedWriter Classses in Java. BufferedReader is a class in Java that reads text from a character-input stream, buffering characters so as to provide for the efficient reading of characters, lines and arrays. The buffer size may be specified.

What is PrintWriter in Java?

The Java PrintWriter class ( java. io. PrintWriter ) enables you to write formatted data to an underlying Writer . For instance, writing int , long and other primitive data formatted as text, rather than as their byte values. Being a Writer subclass the PrintWriter is intended to write text.

What is PrintStream in Java?

The Java PrintStream class ( java. io. PrintStream ) enables you to write formatted data to an underlying OutputStream . The PrintStream class can format primitive types like int , long etc.

What is the use of writeUTF () method?

The java. io. DataOuputStream. writeUTF(String str) method writes a string to the underlying output stream using modified UTF-8 encoding.

Is Java a UTF 8 string?

UTF stands for Unicode Transformation Format. The ‘8’ signifies that it allocates 8-bit blocks to denote a character. The number of blocks needed to represent a character varies from 1 to 4. In order to convert a String into UTF-8, we use the getBytes() method in Java.

What does UTF 8 mean?

UTF-8 (8-bit Unicode Transformation Format) is a variable width character encoding capable of encoding all 1,112,064 valid code points in Unicode using one to four 8-bit bytes. The encoding is defined by the Unicode Standard, and was originally designed by Ken Thompson and Rob Pike.

What is DataInputStream class?

The Java.io.DataInputStream class lets an application read primitive Java data types from an underlying input stream in a machine-independent way.Following are the important points about DataInputStream − An application uses a data output stream to write data that can later be read by a data input stream.

What is flush in Java?

Java OutputStream flush() Method The flush() method of OutputStream class is used to flush the content of the buffer to the output stream. A buffer is a portion in memory that is used to store a stream of data(characters). That data sometimes will only get sent to an output device, when the buffer is full.

What is the use of UTF in Java?

UTF stands for Unicode Transformation Format. The ‘8’ signifies that it allocates 8-bit blocks to denote a character. The number of blocks needed to represent a character varies from 1 to 4. In order to convert Unicode to UTF-8 in Java, we use the getBytes() method.

What is the immediate superclass of Datainputstream?

The InputStream class is the superclass of all of the Java 1.0 byte input streams, while OutputStream is the superclass of all the byte output streams. The Reader class is the superclass of all the Java 1.1 character input streams, while Writer is the superclass of all character output streams.

What method does the class Datainputstream has that determines the number of bytes remaining in a file to be read?

Class ByteArrayInputStream Determines the number of bytes that can be read from this input stream without blocking. The available method of ByteArrayInputStream returns the value of, which is the number of bytes remaining to be read from the input buffer. Reads the next byte of data from this input stream.

How do you call a URL in Java?

Below are the steps we need to follow for sending Java HTTP requests using HttpURLConnection class. Create URL object from the GET/POST URL String. Call openConnection() method on URL object that returns instance of HttpURLConnection. Set the request method in HttpURLConnection instance, default value is GET.