What's the difference between Printwriter and OutputStream

First,we have PrintWriter

java.io.File f=new java.io.File("s.txt");

   java.io.PrintWriter out=new java.io.PrintWriter(f);

   out.print(5);

   out.print(7);

   out.close();

Then we have outputstream

 java.io.File f=new java.io.File("s.txt");

 java.io.FileOutputStream out=new java.io.FileOutputStream(f);

   out.write(5);

   out.write(7);

   out.close();

Whats the difference?