It gives me an error why???

Question

public class Program {
public static void main(String[] args) {
int day = w;
DataInputStream in = new DataInputStream (System.in);
System.out.println ("Enter a Value");
w = Integer.parseInt(in.readLine []);
switch(w) {
case 1:
System.out.println("Monday");
break;
case 2:
System.out.println("Tuesday");
break;
case 3:
System.out.println("Wednesday");

Answer 1

You're setting the integer variable day to an uninitialized and undeclared variable "w" on line 3. Then on line 6 you're assigning an integer to that same unknown. Try initializing your day variable to 0 and then on line 6 set the variable day to the parsed integer.

Furthermore your switch should be checking against the variable day as well.

Let me know if you need more help.