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Copying Files using FileChannel

import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.nio.channels.FileChannel; public class MainClass {   public static void main(String[] args) throws Exception {     File fromFile = new File("fromFile.txt");     File toFile = new File("toFile.txt");     FileInputStream inFile = new FileInputStream(fromFile);     FileOutputStream outFile = new FileOutputStream(toFile);     FileChannel inChannel = inFile.getChannel();     FileChannel outChannel = outFile.getChannel();     int bytesWritten = 0;     long byteCount = inChannel.size();     while (bytesWritten < byteCount) {       bytesWritten += inChannel.transferTo(bytesWritten, byteCount - bytesWritten, outChannel);     }     inFile.close();     outFile.close();   } }