To answer this question, you need to understand the concept of constructors.

Option A) method - This option is incorrect because a method is a block of code that performs a specific task. It is not automatically invoked when an object is created.

Option B) garbage collection - This option is incorrect because garbage collection is the process of automatically reclaiming the memory occupied by objects that are no longer in use. It is not invoked when an object is created.

Option C) finalizer - This option is incorrect because a finalizer is a special method that is automatically called before an object is garbage collected. It is not invoked when an object is created.

Option D) Constructor - This option is correct because a constructor is a special method that is automatically invoked when an object is created. It is used to initialize the state of the object and allocate memory for it.

Option E) none of the above - This option is incorrect because option D, Constructor, is the correct answer.

The correct answer is D) Constructor. This option is correct because a constructor is automatically invoked when an object is created.

• Thanks
• Wrong explanation

To answer this question, we need to understand the requirements for compiling a source code file in Java.

Option A) It must have a package statement - This option is incorrect because a source code file can be compiled without a package statement. The package statement is used to organize classes into different packages, but it is not a requirement for compilation.

Option B) It must be named Test.java - This option is correct because Java source code files must be named with the same name as the public class they contain. In this case, the public class is named Test, so the file must be named Test.java.

Option C) It must import java.lang - This option is incorrect because the import statement for java.lang is automatically added by the Java compiler. It is not necessary to explicitly import java.lang in your source code file.

Option D) It must declare a public class named Test - This option is incorrect because it is not necessary to declare a public class named Test in order for the source code file to compile. However, if the source code file does contain a public class, it must be named Test to match the file name.

Therefore, the correct answer is B) It must be named Test.java. This option is correct because Java source code files must be named with the same name as the public class they contain.

• Thanks
• Wrong explanation