Question

4. The _____ case is performed by the switch statement if a match is not found

1. default

2. first

3. second

4. otherwise

Answer:

5. When three relational expressions are joined by OR (||) operators, there must be at least _____ of the relational expressions that evaluate to true for the logical expression to evaluate to true.

1. one

2. two

3. three

4. none of the relational expressions evaluate to true

Answer:

6. Which of the following items is an acceptable first character in a Java identifier, such as a variable name?

1. letter

2. period

3. semicolon

Answer:

7. When a group of several relational expressions are joined with AND (&&) operators, _____ relational expression(s) must be evaluated to true for the logical expression to be evaluated to true.

1. one

2. two

3. all

4. none of the relational expressions evaluate to true

Answer:

8. The _____ command allows exiting from a switch statement when a match has occurred.

1. else

2. if

3. case

4. break

Answer:

9. The language directly executable by a CPU (without translation) is:

1. bytecode

2. source code

3. machine code

Answer:

10. The logical operator || has higher precedence than &&.

1. true

2. false

Answer:

11. Which of the following Boolean assignment statements is valid?

1. boolean a = ‘true’;

b. boolean a = true;

c. boolean a = “true”;

d. boolean a = TRUE;

Answer:

12. Which of the following is NOT a logical operator?

1. &&

2. ||

3. %

Answer:

13. The operands of a logical expression must be of type ______

1. float

2. long

3. integer

4. boolean

Answer:

14. Assuming that the variables are integers, which of the following expressions is not valid?

1. (a <= B)

2. (a != B)

3. (A == B) <= C

4. (A ==B)

Answer:

15. Java allows assigning a wrong type to a variable by using casting. According to the information given in this class, when assigning a narrow range value to a wider range variable, explicit casting is not needed.

1. true

2. false

Answer:

16. If two classes are related to each other through inheritance hierarchy, the child object can access its parent’s private members.

1. true

2. false

Answer:

17. Java is a structured language. This means Java uses the following mechanisms to control the execution flow.

1. Block, loops, and repetition.

2. Block, selection, and repetition.

3. Block, selection, if statements.

Answer:

Answer 1

Question4: Answer: default The default case is performed by the switch statement if a match is not found

Question5: Answer: one When three relational expressions are joined by OR (||) operators, there must be at least one of the relational expressions that evaluate to true for the logical expression to evaluate to true.

Question6: Answer: Letter Letter is an acceptable first character in a Java identifier, such as a variable name?

Question7: Answer: all When a group of several relational expressions are joined with AND (&&) operators, all relational expression(s) must be evaluated to true for the logical expression to be evaluated to true.

Question8:

Answer: break The break command allows exiting from a switch statement when a match has occurred.

Question9: Answer: machine code The language directly executable by a CPU (without translation) is: machine code

Question10: Answer: false The logical operator && has higher precedence than ||, so the given statement is false.

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