NestedForLoops.java

    public static void main (String[] args) {
        // declare integer variables
        int i, r, c;

        // print horizontal line at top
        System.out.print ("+"); // corner
        for (c=0; c<6; c++) {
            System.out.print ("-");
        }// for c
        System.out.println ("+"); // corner and new line

        // outer loop
        for (i=0; i<2; i++) {
            // inner loop
            for (r=0; r<6; r++) {
                System.out.print ("|"); // vertical line
                if (r%3==0) {
                    System.out.print ("  ^^  ");
                } else if (r%3==1) {
                    System.out.print (" ^  ^ ");
                } else {
                    System.out.print ("^    ^");
                }// if
                System.out.println ("|"); // vertical line and new line
            } // end inner loop

            // print horizontal line
            System.out.print ("+"); // corner
            for (c=0; c<6; c++) {
                System.out.print ("-");
            }// for c
            System.out.println ("+"); // corner and new line
        } // end outer loop
    } // main