Oracle 1z0-809 Online Access

Java SE 8 Programmer II Questions and Answers

Question 29

Given that data.txt and alldata.txt are accessible, and the code fragment:

What is required at line n1 to enable the code to overwrite alldata.txt with data.txt?

Options:

br.close();

bw.writeln();

br.flush();

bw.flush();

Question 30

Given:

and the code fragment:

What is the result?

Options:

An exception is thrown at line n2.

100

A compilation error occurs because the try block is declared without a catch or finally block.

A compilation error occurs at line n1.

Question 31

You want to create a singleton class by using the Singleton design pattern.

Which two statements enforce the singleton nature of the design? (Choose two.)

Options:

Make the class static.

Make the constructor private.

Override equals() and hashCode() methods of the java.lang.Object class.

Use a static reference to point to the single instance.

Implement the Serializable interface.

Question 32

Given the structure of the Student table:

Student (id INTEGER, name VARCHAR)

Given the records from the STUDENT table:

Given the code fragment:

Assume that:

What is the result?

Options:

The program prints Status: true and two records are deleted from the Student table.

The program prints Status: false and two records are deleted from the Student table.

A SQLException is thrown at runtime.

The program prints Status: false but the records from the Student table are not deleted.

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Java SE 8 Programmer II Questions and Answers

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