Tóm Tắt
Java.io.Writer.flush() Method
Description
The java.io.Writer.flush() method flushes the stream. If the stream has saved any characters from the various write() methods in a buffer, write them immediately to their intended destination. Then, if that destination is another character or byte stream, flush it. Thus one flush() invocation will flush all the buffers in a chain of Writers and OutputStreams.
Declaration
Following is the declaration for java.io.Writer.flush() method.
public abstract void flush()
Parameters
NA
Return Value
This method does not return a value.
Exception
IOException − If an I/O error occurs.
Example
The following example shows the usage of java.io.Writer.flush() method.
package com.tutorialspoint; import java.io.*; public class WriterDemo { public static void main(String[] args) { String s = "Hello World"; // create a new writer Writer writer = new PrintWriter(System.out); try { // append a string writer.append(s); // flush the writer writer.flush(); // append a new string in a new line writer.append("\nThis is an example"); // flush the stream again writer.close(); } catch (IOException ex) { ex.printStackTrace(); } } }
Let us compile and run the above program, this will produce the following result −
Hello World This is an example
java_io_writer.htm
Advertisements