What is the importance of transferTo() method in Java 9?

The transferTo() method was added to the InputStream class in Java 9. This method has been used to copy data from an input stream to an output stream in Java. This means that it reads all bytes from the input stream and writes the bytes to the output stream in the order they were read.

Syntax

<strong>public long transferTo(OutputStream out) throws IOException</strong>

Example

import java.util.Arrays;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

public class TransferToMethodTest {
   public void testTransferTo() throws IOException {
      byte[] inBytes = "tutorialspoint".<strong>getBytes()</strong>;
      <strong>ByteArrayInputStream </strong>bis = new ByteArrayInputStream(inBytes);
      <strong>ByteArrayOutputStream </strong>bos = new ByteArrayOutputStream();
      try {
         bis.<strong>transferTo</strong>(bos);
         byte[] outBytes = bos.<strong>toByteArray</strong>();
         System.out.println(<strong>Arrays.equals(</strong>inBytes, outBytes));
      } finally {
         try {
            bis.close();
         } catch(IOException e) {
            e.printStackTrace();
         }
         try {
            bos.close();
         } catch(IOException e) {
              e.printStackTrace();
         }
      }
   }
   public static void main(String args[]) throws Exception {
      TransferToMethodTest test = new TransferToMethodTest();
      test.testTransferTo();
   }
}

Output

<strong>true</strong>

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