Answer to Question #108201 in Java | JSP | JSF for Lavi

Question

Question 1. Write True or False for each of the following statements.(corecct if fales)
1-If a method does not return a value, the return value type must be static.
2-The expression !(true || true && false || !true) is evaluated to true.
3-Every array has a length that specifies the number of elements in the array.
4-It is possible for the body of a do-while statement to never be executed.
5-The statement import java.*.*; is valid if placed at the very top of a Java source file.
6-The expression s.indexOf(",") returns the position of a comma in s, a String object.
7-The following statement System.out.print("Hi".compareTo("Hi") == 0); is correct.
8-The switch selection structure must end with the default case.
9-Variables declared in the body of a particular method are known as local variables.
10-int array = new int[10]; creates an integer array of size 10

Answer 1

1-If a method does not return a value, the return value type must be static.

False

2-The expression !(true || true && false || !true) is evaluated to true.

False

3-Every array has a length that specifies the number of elements in the array.

True

4-It is possible for the body of a do-while statement to never be executed.

False (the body of the do-while method is always executed at least 1 time)

5-The statement import java.*.*; is valid if placed at the very top of a Java source file.

True

6-The expression s.indexOf(",") returns the position of a comma in s, a String object.

False (it returns int position of a comma in s, not String object)

7-The following statement System.out.print("Hi".compareTo("Hi") == 0); is correct.

True

8-The switch selection structure must end with the default case.

False (The default case in a switch structure is optional and only used when none of the other cases match. )

9-Variables declared in the body of a particular method are known as local variables.

True

10-int array = new int[10]; creates an integer array of size 10.

False ( correct: int[] array = new int[10];)