Java basics
flush()
The java.io.BufferedWriter.flush() method flushes the characters from a write buffer to the character or byte stream as an intended destination.
Syntax:public Writer flush()
Example:import java.io.BufferedWriter;
import java.io.IOException;
import java.io.StringWriter;
public class BufferedWriterDemo {
public static void main(String[] args) throws IOException {
StringWriter sw = null;
BufferedWriter bw = null;
String letters = "ABCDEFGHIJK";
try{
// create string writer
sw = new StringWriter();
//create buffered writer
bw = new BufferedWriter(sw);
// for each character in the string
for (char c: letters.toCharArray())
{
// append character to the writer
bw.append(c);
// flush the characters to the intended stream
bw.flush();
// print string buffer from string writer
System.out.println(sw.getBuffer());
}
}catch(IOException e){
// if I/O error occurs
e.printStackTrace();
}finally{
// releases any system resources associated with the stream
if(sw!=null)
sw.close();
if(bw!=null)
bw.close();
}
}
}
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