BufferedWriter flush() method in Java with Examples
The flush() method of BufferedWriter class in Java is used to flush the characters from the buffered writer stream.
Syntax:
public void flush()
throws IOException
Specified By: This method is specified by the flush() method of Flushable interface.
Overrides: This method overrides the flush() method of Writer class.
Parameters: This method does not accept any parameter.
Return value: This method does not return any value.
Exceptions: This method throws IOException if an I/O error occurs.
Below programs illustrate flush() method in BufferedWriter class in IO package:
Program 1:
// Java program to illustrate // BufferedWriter flush() method import java.io.*; public class GFG { public static void main(String[] args) throws IOException { // Create the string Writer StringWriter stringWriter = new StringWriter(); // Convert stringWriter to // bufferedWriter BufferedWriter buffWriter = new BufferedWriter( stringWriter); // Write "Beginner" to buffer writer buffWriter.write( "w3wiki", 0, 5); // Flush the buffer writer buffWriter.flush(); System.out.println( stringWriter.getBuffer()); } } |
Output:
Beginner
Program 2:
// Java program to illustrate // BufferedWriter flush() method import java.io.*; public class GFG { public static void main(String[] args) throws IOException { // Create the string Writer StringWriter stringWriter = new StringWriter(); // Convert stringWriter to // bufferedWriter BufferedWriter buffWriter = new BufferedWriter( stringWriter); // Write "Beginner" to buffered writer buffWriter.write( "w3wiki", 0, 5); // Flush the buffered writer buffWriter.flush(); System.out.println( stringWriter.getBuffer()); // Write "w3wiki" // to buffered writer buffWriter.write( "w3wiki", 5, 8); // Flush the buffered writer buffWriter.flush(); System.out.println( stringWriter.getBuffer()); } } |
Output:
Beginner w3wiki
References:
https://docs.oracle.com/javase/10/docs/api/java/io/BufferedWriter.html#flush()
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