File file1 = new File(System.getProperty("root"), name1);
File file2 = new File(System.getProperty("root"), name2);
try {
if (!file1.exists() || !file2.exists()) {
System.out.println("One or both files do not exist:" + name1 + ", " + name2);
return false;
}
if (file1.length() != file2.length()) {
System.out.println("File size mismatch:" + name1 + "(" + file1.length() + "), " +
name2 + "(" + file2.length() + ")");
return false;
}
// byte - byte compare
byte[] buffer1 = new byte[BUF_SIZE];
byte[] buffer2 = new byte[BUF_SIZE];
FileInputStream fis1 = new FileInputStream(file1);
FileInputStream fis2 = new FileInputStream(file2);
int index = 0;
int read = 0;
while ((read = fis1.read(buffer1)) != -1) {
fis2.read(buffer2);
for (int i = 0; i < read; ++i, ++index) {
if (buffer1[i] != buffer2[i]) {
System.out.println("Bytes mismatch:" + name1 + ", " + name2 +
" at byte " + index);
return false;
}
}
}
return true;
}
catch (IOException e) {
System.out.println("IOException comparing files: " + name1 + ", " + name2);
return false;
}
