logo Practice-It logo

Pond

Author: Stuart Reges (on 2014/02/13)

Assuming that the following classes have been defined:

        public class Bay extends Lake {
            public void method1() {
            System.out.println("Bay 1");
        super.method2();
            }

            public void method2() {
            System.out.println("Bay 2");
            }
        }

        public class Pond {
            public void method2() {
            System.out.println("Pond 2");
            }
        }

        public class Ocean extends Bay {
            public void method2() {
            System.out.println("Ocean 2");
            }
        }

        public class Lake extends Pond {
            public void method3() {
            System.out.println("Lake 3");
        method2();
            }
        }

And assuming the following variables have been defined:

    Lake var1 = new Ocean();
    Pond var2 = new Pond();
    Pond var3 = new Lake();
    Object var4 = new Bay();
    Lake var5 = new Bay();
    Bay var6 = new Ocean();

In the table below, indicate in the right-hand column the output produced by the statement in the left-hand column. If the statement produces more than one line of output, indicate the line breaks with slashes as in "a/b/c" to indicate three lines of output with "a" followed by "b" followed by "c". If the statement causes an error, fill in the right-hand column with either the phrase "compiler error" or "runtime error" to indicate when the error would be detected.

var1.method2();
var2.method2();
var3.method2();
var4.method2();
var5.method2();
var6.method2();
var1.method3();
var2.method3();
var3.method3();
var4.method3();
var5.method3();
var6.method3();
((Ocean)var5).method1();
((Lake)var3).method3();
((Lake)var4).method1();
((Ocean)var1).method1();
((Bay)var4).method1();
((Lake)var2).method3();
((Ocean)var5).method1();
((Pond)var4).method2();

You must log in before you can solve this problem.


Log In

If you do not understand how to solve a problem or why your solution doesn't work, please contact your TA or instructor.
If something seems wrong with the site (errors, slow performance, incorrect problems/tests, etc.), please

Is there a problem? Contact a site administrator.