Java Final EXAM Questions & Answers 100% Correct!!

Java Final EXAM Questions & Answers 100%
Correct!!

Which of these packages is automatically loaded, so you don't need to import it?




1. java.applet

2. java.awt

3. java.string

4. java.lang - ANSWER4. java.lang 100%



System.out is an object of the class _________________.




1. Applet

2. Output

3. System

4. PrintStream - ANSWER4. PrintStream 100%



Which of these shows the correct way to print a literal number?




1. System.out.println({123.75});

2. System.out.println("123.75");

3. System.out.println('123.75');

4. System.out.println(123.75); 100% - ANSWER4. System.out.println(123.75); 100%



According to the CS 170 style rules, every method and each class must have a
______________________.

,1. Single-line comment

2. Javadoc comment

3. body

4. header - ANSWER2. Javadoc comment 100%



The Java keyword that says class B adds something to, or builds upon the existing definition for class
A is ____________________.




1. extends

2. import

3. derives

4. inherits - ANSWER1. extends 100%



Consider the following statements.



double x = -987.33;

String y = String.format("%(9.2f", x);



What is the value of y?




1. "(987.33)"

2. "-(987.33)"

3. "-987.33"

4. " (987.33)" - ANSWER4. " (987.33)" 100%

, If s is a String object, which of these relational expressions is illegal (that is, your code will not
compile if you use it) :




A. s == "Hi"

B. s != "Hi"

C. s > "Hi"

D. All of these are legal - ANSWERC. s > "Hi" 100%




1. By assigning the value to one of its parameters

2. It can call its caller with the value

3. By using the return statement

4. It cannot send primitive values back to the caller - ANSWER3. By using the return statement 100%



Which of these cannot be used as a case label in a switch statement :




A. case 10:

B. case x: // assume x is a final int variable

C. case 10..20:

D. case 'C': - ANSWERC. case 10..20: 100%



A loop that searches for a particular value in input is called a(n) :