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What does BufferedReader mean in Java?

What does BufferedReader mean in Java?

BufferedReader is a class which simplifies reading text from a character input stream. It buffers the characters in order to enable efficient reading of text data.

What is BufferedReader and BufferedWriter in Java?

About BufferedWriter and BufferedReader The “BufferedWriter” class of java supports writing a chain of characters output stream (Text based) in an efficient way. The Chain-Of-Characters can be Arrays, Strings etc. The “BufferedReader” class is used to read stream of text from a character based input stream.

What is difference between BufferedReader and Scanner?

BufferReader has large buffer of 8KB byte Buffer as compared to Scanner. Scanner is bit slower as it need to parse data as well. BufferReader is faster than Scanner as it only reads a character stream. Scanner has methods like nextInt(), nextShort() etc.

How do I create a BufferedReader?

Java BufferedReader Example

  1. package com.javatpoint;
  2. import*;
  3. public class BufferedReaderExample {
  4. public static void main(String args[])throws Exception{
  5. FileReader fr=new FileReader(“D:\\testout.txt”);
  6. BufferedReader br=new BufferedReader(fr);
  7. int i;
  8. while((!=- 1){

What is readLine () in Java?

The readLine() method of Console class in Java is used to read a single line of text from the console. Syntax: public String readLine() Parameters: This method does not accept any parameter. Return value: This method returns the string containing the line that is read from the console.

Why BufferedReader is faster than Scanner?

BufferedReader has significantly larger buffer memory than Scanner. The Scanner has a little buffer as opposed to the BufferedReader, but it’s more than enough. BufferedReader is a bit faster as compared to scanner because the scanner does parsing of input data and BufferedReader simply reads a sequence of characters.

What is the use of OutputStreamWriter in java?

The OutputStreamWriter class of the package can be used to convert data in character form into data in bytes form. It extends the abstract class Writer . The OutputStreamWriter class works with other output streams. It is also known as a bridge between byte streams and character streams.

What is FileReader and FileWriter in java?

Java FileWriter and FileReader classes are used to write and read data from text files (they are Character Stream classes). It is recommended not to use the FileInputStream and FileOutputStream classes if you have to read and write any textual information as these are Byte stream classes.

Why BufferedReader is faster than scanner?

Is BufferedReader synchronous?

BufferedReader is synchronous while Scanner is not.

What is the IOException in Java?

IOException. This exception is related to Input and Output operations in the Java code. It happens when there is a failure during reading, writing, and searching file or directory operations. IOException is a checked exception. A checked exception is handled in the java code by the developer.

What is InputStreamReader and BufferedReader in Java?

BufferedReader reads a couple of characters from the Input Stream and stores them in a buffer. InputStreamReader reads only one character from the input stream and the remaining characters still remain in the streams hence There is no buffer in this case.

How to use buffered reader in Java?

read () Method. For example,suppose we have a file named input.txt with the following content. This is a line of text inside the file.

  • skip () Method. To discard and skip the specified number of characters,we can use the skip () method.
  • close () Method. To close the buffered reader,we can use the close () method.
  • What is nextchar in Java and how to implement it?

    Scanner class in Java supports nextInt(), nextLong(), nextDouble() etc. But there is no nextChar() (See this for examples). To read a char, we use next().charAt(0). next() function returns the next token/word in the input as a string and charAt(0) function returns the first character in that string.

    What is input and output in Java?

    Write a byte to current Outputstream : public void write (int)throws IOException

  • Write array of byte to current output stream : public void write (byte[])throws IOException
  • Flushes the current OutputStream: public void flush ()throws IOException
  • Close current Output Stream. : public void close ()throws IOException
  • How to read file line by line in Java?


  • Scanner class
  • Using Files
  • RandomAccessFile