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Categories / Java / File Input Output

 

Get FileChannel from FileOutputStream and FileInputStream

import java.io.FileInputStream; import java.io.FileOutputStream; import java.nio.ByteBuffer; import java.nio.channels.FileChannel; public class CopyChannels {   public static void main(String[] args) throws Exception {     String fromFileName = "from.txt";     String toFileName = "to.txt";     FileChannel in = new FileInputStream(fromFileName).getChannel();     FileChannel out = new FileOutputStream(toFileName).getChannel();     ByteBuffer buff = ByteBuffer.allocate(32 * 1024);     while (in.read(buff) > 0) {       buff.flip();       out.write(buff);       buff.clear();     }     in.close();     out.close();   } }