CSE 205 Midterm Review UPDATED ACTUAL Exam Questions and CORRECT Answers

CSE 205 Midterm Review UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Evaluate the following code to determine the output.


class Foo {
public int i = 62;


public Foo(int i) {
this.i = i;
}
}
...
Foo x = new Foo(15), y = new Foo(50);
y.i = x.i;
y.i = 10;

System.out.println(x.i); - CORRECT ANSWER - 15



Which of the following are valid Java Identifiers? - CORRECT ANSWER - - Names can
CONTAIN letters, digits, underscores, and dollar signs
- Names MUST begin with a letter
- Names 'should' start with a lowercase letter and it cannot contain whitespace
- Reserved words (like Java keywords, such as int or boolean) cannot be used as names


Ex. of proper identifiers:
SpEcIaL_vAlUe
a555c

,Tax
age1


What will be the output of this code?
int a = 5;
int x = a;
a = 10;

System.out.print(x); - CORRECT ANSWER - 5


Given the following int (integer) variables, a = 15, b = 46, c = 4, d = 5, evaluate the expression:


a + b % (c * d) - CORRECT ANSWER - 21


(T/F) Evaluate this logical expression:


true || ! false - CORRECT ANSWER - True



(T/F) Evaluate this expression: 3 <= 2 - CORRECT ANSWER - False



(T/F) Evaluate this expression: 8 + 7 > 5 && 16 - 5 <= 8 - CORRECT ANSWER - False


Which of the following are Java primitive data types? Choose all that apply. - CORRECT
ANSWER - Float, Double, Boolean, Char


Which of the following Java literals have the data type boolean? Choose all that apply. -
CORRECT ANSWER - true, false


(boolean is true / false)

, When the following expression is evaluated, the result will be what Java data type?


"-48" + "1" - CORRECT ANSWER - String


Which of the following would be the best data type for a variable to store a book title? -
CORRECT ANSWER - String


Write a line of Java code that will declare a int variable named y that is initialized to the value -
80. - CORRECT ANSWER - int y = -80;


What is the output of this Java program?


class Driver {
public static void main(String[] args) {
foo(6);
bar(8);
}
static void foo(int a) {
System.out.print(a);
bar(a - 1);
}
static void bar(int a) {
System.out.print(a);
}

} - CORRECT ANSWER - 658


What is the output of this Java program?