// expanding on concepts from IV1 and IV2 examples
//-----------------------------------------------------------------------------
// Do instance variables have to be written before methods?
// No. So, what happens when you create a class?
// Java assigns instance variables in the order that they're written.
// Then, Java performs tasks inside the constructor that you called.

public class iv3 {
    public static void main(String[] args) {
	Test1 t1 = new Test1(1,2);
	Test2 t2 = new Test2(3,4);
    }
}

class Test2 {
    // constructor first

    Test2(int x, int y) {
	print("Test 2 (1): ");
	this.x=x; this.y=y;
	print("Test 2 (2): ");
    }

    // instance variables next
    int x; int y=x;

    // instance method: print out IV values
    void print(String s) {
	System.out.println(s + this.x);	
	System.out.println(s + this.y);
    }

}
class Test1 {
    // instance variables first
    int x; int y=x;

    // constructor next
    Test1(int x, int y) {
	print("Test 1 (1): ");
	this.x=x; this.y=y;
	print("Test 1 (2): ");
    }

    // instance method: print out IV values
    void print(String s) {
	System.out.println(s + this.x);	
	System.out.println(s + this.y);
    }

}
// Output
// In both cases, the IVs are assigned in order.
// Then code statements inside the constructors are called.

/* output:
Test 1 (1): 0 // before constructor assigns value
Test 1 (1): 0 // before constructor assigns value
Test 1 (2): 1 // after  constructor assigns value
Test 1 (2): 2 // after  constructor assigns value
Test 2 (1): 0
Test 2 (1): 0
Test 2 (2): 3
Test 2 (2): 4

*/