BufferedWriter flush() method in Java with Examples
Last Updated :
28 May, 2020
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:
import java.io.*;
public class GFG {
public static void main(String[] args)
throws IOException
{
StringWriter stringWriter
= new StringWriter();
BufferedWriter buffWriter
= new BufferedWriter(
stringWriter);
buffWriter.write(
"GEEKSFORGEEKS" , 0 , 5 );
buffWriter.flush();
System.out.println(
stringWriter.getBuffer());
}
}
|
Program 2:
import java.io.*;
public class GFG {
public static void main(String[] args)
throws IOException
{
StringWriter stringWriter
= new StringWriter();
BufferedWriter buffWriter
= new BufferedWriter(
stringWriter);
buffWriter.write(
"GEEKSFORGEEKS" , 0 , 5 );
buffWriter.flush();
System.out.println(
stringWriter.getBuffer());
buffWriter.write(
"GEEKSFORGEEKS" , 5 , 8 );
buffWriter.flush();
System.out.println(
stringWriter.getBuffer());
}
}
|
Output:
GEEKS
GEEKSFORGEEKS
References:
https://docs.oracle.com/javase/10/docs/api/java/io/BufferedWriter.html#flush()
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