Java.io.Writer.close() Method

Description

The java.io.Writer.close() method closes the stream, flushing it first. Once the stream has been closed, further write() or flush() invocations will cause an IOException to be thrown. Closing a previously closed stream has no effect.

Declaration

Following is the declaration for java.io.Writer.close() method

public abstract void close()

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.close() 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
         writer.append("\nThis is an example");

         // flush and close the stream
         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