Thread: Logical Flaw HELP!

So I have a string Streams in a class
and a method which requires user to enter either 1,2,3
if they enter 1 Streams=Science, if they enter 2 Streams=2, If they enter 3 Stream= what ever the user inputs. The logic is fairly simple but I can't get it to work
here is the code demo

Scanner input = new Scanner(System.in);
String Streams;
public void InputStream() {
	System.out.println("Enter the Stream.");
	System.out.println("1 for Science, 2 for Arts, 3 for others");
	int answer=input.nextInt();
	if (answer==1) {
	 Streams="Science";
	}
if(answer==2) {
	 Streams="Arts";
}
else {
	System.out.println("enter the subject");
	input.reset();
	Streams=input.nextLine();
}
}
//i am gonna call the constructor "method"
public method(){
InputStream();
System.out.println(Streams);

also
in output console the text from the 3rd if statement"enter the subject" appears every single time even when the user enters 1 or 2.
A quick reply will be really appreciated
}