CSE 205 Midterm Review | Latest Study Questions And Answers | Complete Solutions

CSE 205 Midterm Review | Latest Study Questions
And Answers | Complete Solutions
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); ANS 15



Which of the following are valid Java Identifiers? ANS - 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); ANS 5



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



a + b % (c * d) ANS 21



(T/F) Evaluate this logical expression:



true || ! false ANS True



(T/F) Evaluate this expression: 3 <= 2 ANS False



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



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



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



(boolean is true / false)


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



"-48" + "1" ANS String



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

, Write a line of Java code that will declare a int variable named y that is initialized to the value -80. ANS 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);
}

} ANS 658



What is the output of this Java program?


class Driver {
public static void main(String[] args) {
int a = 6;
int b = 7;
int c = 8;
int x = 1;


if (a < 5) {

x = x + 600;
}