public class ScopeTest {

	static int xValue = 5;		                    // a "global" variable
	                                                // (actually a class variable)
	public static void main (String args[]) {

		int yValue = 7;                             // a local variable
		System.out.print("Before calling helper1: ");
		System.out.print("xValue is " + xValue);
		System.out.println(" and yValue is " + yValue);

		int zValue = helper1(yValue);               // another local variable
		System.out.print("After returning from helper1: zValue is " + zValue);
		System.out.println(" and xValue is still " + xValue);

		helper2();
		System.out.println("After returning from helper2: xValue is now " + xValue);
	}

	public static int helper1 (int n) {
	
		System.out.print("Inside helper1: ");
		System.out.print("xValue is " + xValue);	// refers to the class variable

		int xValue = n;								// declare a new local variable
		                                            //  with the same name
		System.out.print(", n is " + n);
		System.out.println(", but this xValue is " + xValue);	// which one is this?

		return 2*n;
	}

	public static void helper2 () {
		System.out.println("Inside helper2: ");
		xValue = 123;                               // assigns a new value to class variable
	}
	
}