CSE 205 Midterm Review UPDATED Exam Questions and CORRECT Answers

CSE 205 Midterm Review UPDATED
Exam Questions and CORRECT Answers
Which of the following are valid Java Identifiers? Choose all that apply. - CORRECT
ANSWER - age1
a555c
SpEcIaL_vAlUe
Tax


What will be the output of this code?
int x = 2;
int y = 5;
x = y + 1;
y = x - 1;
x = x + 1;
y = y - 1;
x = x - y;

System.out.print(x); - CORRECT ANSWER - 3


Given the following int (integer) variables, a = 5, b = 5, c = 45, d = 6, evaluate the expression:

a * b - c / d - CORRECT ANSWER - 17


Evaluate this logical expression:

false && true - CORRECT ANSWER - False



Evaluate this expression: 1 < 3 - CORRECT ANSWER - True


Evaluate this expression:

,3 + 1 >= 4 || 19 - 3 < 8 - CORRECT ANSWER - True


Which of the following are Java primitive data types? Choose all that apply. - CORRECT
ANSWER - float
boolean
char
double


Which of the following Java literals have the data type float? Choose all that apply. - CORRECT
ANSWER - 123f
-3f


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

97f / 53 - CORRECT ANSWER - float


Which of the following would be the best data type for a variable to store a count of the number
of people currently living in the United States? - CORRECT ANSWER - int


Write a line of Java code that will declare a char variable named formthat is initialized to the
value 'y'. - CORRECT ANSWER - char form = 'y';


What will this small program output?
class Main {
public static void foo() {
int x=9;
System.out.println(x);
}
public static int x = 16;
public static void main(String[]args) {

,int x = 23;
foo();
}

} - CORRECT ANSWER - 9


What is the output of this Java program?
class Driver {
public static void main(String[]args) {
foo(6);
bar(5);
}
static void foo(int a) {
System.out.print(a);
}
static void bar(int a) {
foo(a + 1);
System.out.print(a);
}

} - CORRECT ANSWER - 665


What is the output of this Java program?
class Driver {
public static void main(String[] args) {
int a = foo(4);
int b = bar(3);
}
static int foo(int a) {
a = bar(a+4);

, System.out.print(a);
return a;
}
static int bar(int a) {
System.out.print(a);
return a - 1;
}

} - CORRECT ANSWER - 873


What is the output of this Java program?
class Driver {
public static void main(String[] args) {
int a = 8;
int b = 6;
int c = 6;
int x = 1;
if (a < 3) {
x = x + 800;
}
if (b < 6) {
x = x + 60;
}
if (c < 6) {
x = x + 6;
}
System.out.print(x);
}

} - CORRECT ANSWER - 1