Java.io.Writer.append() Method

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Description

The java.io.Writer.append(CharSequence csq) method appends the specified character sequence to this writer.

Declaration

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

public Writer append(CharSequence csq)

Parameters

csq − The character sequence to append. If csq is null, then the four characters "null" are appended to this writer.

Return Value

This method returns this writer.

Exception

IOException − If an I/O error occurs.

Example

The following example shows the usage of java.io.Writer.append() method.

package com.tutorialspoint;

import java.io.*;

public class WriterDemo {
   public static void main(String[] args) {
      CharSequence csq = "Hello World!";

      // create a new writer
      Writer writer = new PrintWriter(System.out);

      try {
         // append a sequence and change line
         writer.append("This is an example\n");

         // flush the writer
         writer.flush();

         // append a new sequence
         writer.append(csq);

         // flush the writer to see the result
         writer.flush();

      } catch (IOException ex) {
         ex.printStackTrace();
      }
   }
}

Let us compile and run the above program, this will produce the following result −

This is an example
Hello World!