// array of arrays
// some syntax concerning initializer lists and anonymous arrays

// you can only use initializer lists as
// + a single statement combining declaration and initialization
// + as part of an anonymous array

public class aoa3 {
    public static void main(String args[]) {

	// make some 1-D arrays
	int[] x={1,2};
	int[] y={3,4};
	int[] z={5,6};

	// create a 2-D array
        int[][] A = {x,y};
	
	// can you change $A$ with the following code?
	// A = {x,z};
	// no! aoa3.java:11: Array constants can only be used in initializers.
        //             A = {x,z};
	//                 ^ 
	//     1 error 
	// This means that you must DECLARE and ASSIGN in the same statement
	// when using initializer lists.

	// However, you may use an anonymous array to get the effect
	// we were looking for:
	A = new int[][] {x,z};
    }
}