Reading an int from bytes(binary file) - HELP

Code Java:

---

public static int ReadInt(FileInputStream f)
  {	
	  try
	  {
 
	  int x = 0;
	  int b =  f.read();
	  x += b;
	  x = x << 8;
 
 
	  b=f.read();
	  x += b;
	  x = x << 8;
 
 
	  b=f.read();
	  x += b;
	  x = x << 8;
 
 
	  b=f.read();
	  x += b;
 
 
	  }
	  catch (Exception e) {
 
	}
	  return x;
  }

---

getting 0 all the time.....

For future reference, please flank your code with the [highlight=java][/highlight] tags.

What input are you reading? It might help if you could post a more clear, compilable, concise, example that demonstrates the function(s) working improperly with a defined input.

Code :

---

 
 
public static void main(String[] args){
system.out.println(ReadInt(f));//f is a bmp file
}
 
 
public static int ReadInt(FileInputStream f)
{
try
{
 
int x = 0;
int b = f.read();
x += b;
x = x << 8;
 
 
b=f.read();
x += b;
x = x << 8;
 
 
b=f.read();
x += b;
x = x << 8;
 
 
b=f.read();
x += b;
 
 
}
catch (Exception e) {
 
}
return x;
}

---

Better, but no one else has access to the contents of f...try modifying the code so that it demonstrates the behavior with a given series of known bytes (hard coded)