Multiple choice programming languages java

package inheritance;
class TestInheritance4 {
 String name = "JAVA";
}
package inheritance1;
import
import inheritance.TestInheritance4;
public class TestInheritance_4 extends TestInheritance4 {
 void printName() {
  System.out.println("name =" + name);
 }
 public static void main(String[] args) {
  TestInheritance_4 T_4 = new TestInheritance_4();
  T_4.printName();
 }
}

  1. name = JAVA

  2. Compiler Error

  3. Exception

  4. name = null

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Compilation fails due to multiple errors: an incomplete import statement syntax, the package-private class TestInheritance4 being inaccessible from another package, and its default-visibility field 'name' not being inherited across packages.

AI explanation

To answer this question, we need to understand the concept of packages and inheritance in Java.

In the given code, there are two packages: inheritance and inheritance1. The TestInheritance4 class is defined in the inheritance package, and the TestInheritance_4 class is defined in the inheritance1 package.

The TestInheritance_4 class extends the TestInheritance4 class, which means it inherits the name field from the parent class.

Now, let's go through the options:

Option A) name = JAVA - This option is incorrect. Since the TestInheritance_4 class extends the TestInheritance4 class, it can access the name field. However, the name field is not explicitly assigned any value in the TestInheritance_4 class, so its default value of null will be printed.

Option B) Compiler Error - This option is correct. The code will give a compiler error because the import statement in the TestInheritance_4 class is incomplete. It is missing the required package name. The correct import statement should be import inheritance.TestInheritance4;.

Option C) Exception - This option is incorrect. There is no exception thrown in the code.

Option D) name = null - This option is incorrect. Although the name field is not explicitly assigned any value in the TestInheritance_4 class, the default value of null is not printed. The code will give a compiler error before reaching the point where printName() is called.

Therefore, the correct answer is B) Compiler Error.