比较两个文件是否一样

[code] File inputFile = new File("C:\\0001.DAT");
File outputFile = new File("C:\\0002.DAT");

FileInputStream in;
FileInputStream out;
try {
in = new FileInputStream(inputFile);
out = new FileInputStream(outputFile);

int i;
int j = 0;
while ((i = in.read()) != -1) {
j++;
byte inByte = (byte) i;
byte outByte = (byte) out.read();
if (inByte != outByte) {
System.out.println("in===="+j);
}
}
}
catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}[/code]