Important Notice:

Practice-It will be discontinued as of November 1st, 2024. After this date, the website will remain online for a transitional period, but login will be restricted to University of Washington NetID authentication. This marks the next phase towards the platform's full retirement. Thank you for your use and support of the application over the years.

If you are looking for an alternative, a similar tool, CodeStepByStep, was developed independently by the original author of Practice-It, and is available at codestepbystep.com**

logo Practice-It logo

Main Page → Problems → Solve a Problem

Bunch

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

Assuming that the following classes have been defined: 

        public class Page extends Folder {
            public void method3() {
                System.out.println("Page 3");
            }
        }

        public class Bit extends Bunch {
            public void method1() {
                System.out.println("Bit 1");
            }

            public void method3() {
                System.out.println("Bit 3");
            }
        }

        public class Folder extends Bunch {
            public void method1() {
                System.out.println("Folder 1");
            }

            public void method3() {
                System.out.println("Folder 3");
                super.method3();
            }
        }

        public class Bunch {
            public void method2() {
                System.out.println("Bunch 2");
                method3();
            }
        
            public void method3() {
                System.out.println("Bunch 3");
            }
        }

And assuming the following variables have been defined: 

        Object var1 = new Folder();
        Bunch var2 = new Bunch();
        Bunch var3 = new Bit();
        Folder var4 = new Page();
        Object var5 = new Bunch();
        Bunch var6 = new Page();

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();
((Bit)var6).method1();
((Bunch)var1).method1();
((Bunch)var1).method2();
((Folder)var1).method3();
((Folder)var6).method1();
((Page)var1).method1();
((Page)var4).method2();
((Folder)var3).method1();

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.