private static boolean contentsEquals(InputStream in1,InputStream in2) throws IOException {
  if (!(in1 instanceof BufferedInputStream)) {
    in1=new BufferedInputStream(in1);
  }
  if (!(in2 instanceof BufferedInputStream)) {
    in2=new BufferedInputStream(in2);
  }
  int ch=in1.read();
  while (ch != -1) {
    int ch2=in2.read();
    if (ch != ch2) {
      return false;
    }
    ch=in1.read();
  }
  int ch2=in2.read();
  return ch2 == -1;
}

private static boolean contentsEquals ( InputStream in1 , InputStream in2 ) throws IOException { if ( ! ( in1 instanceof BufferedInputStream ) ) { in1 = new BufferedInputStream ( in1 ) ; } if ( ! ( in2 instanceof BufferedInputStream ) ) { in2 = new BufferedInputStream ( in2 ) ; } int ch = in1 . read ( ) ; while ( ch != - 1 ) { int ch2 = in2 . read ( ) ; if ( ch != ch2 ) { return false ; } ch = in1 . read ( ) ; } int ch2 = in2 . read ( ) ; return ch2 == - 1 ; }
checks whether in1 and in2 is equal .
