Computer scienceProgramming languagesJavaCode organizationObject-oriented programmingClasses and objectsClasses and members

Grouping classes with packages

Theory

Correct packages

Report a typo

You have the following public classes:

  • org.demo.A
  • org.demo.mypackage.B
  • org.demo.mypackage.C

In the body of the class org.demo.mypackage.B you'd like to use other classes for writing fields:

package org.demo.mypackage;

public class B {

    C c1 = new C();  // (1)

    C c2 = new org.demo.mypackage.C(); // (2)

    mypackage.C c3 = new org.demo.mypackage.C(); // (3)

    org.demo.A a = new org.demo.A(); // (4)

    A a1 = new A(); // (5)
}

Select all correct lines (see the number in comments).

Select one or more options from the list
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