Questions and Answers
What will be the output of the following code?
int j = 10;
int k = 8;
j += 2;
k += j;
System.out.print(j);
System.out.print(" ");
System.out.println(k);
What is the output of the following code?
int x = 0;
x++;
x += 1;
x = x + 1;
x = 1;
System.out.println(x);
4
What is the final value of num after the following code?
int num = 5;
num *= 2;
num %= 6;
4
What does the following code set z to?
int x = ;
int y = ;
int z = x;
z /= y;
z += 2;
Signup and view all the answers
What is stored in avg after executing the following code?
double avg = 15 + 20;
avg /= 2;
Signup and view all the answers
Both the value of x and the value of y have been increased in the following code:
int x = 4;
int y = 6;
x = y;
y += x;
Signup and view all the answers
What is the output of the following code?
double d = 0.25;
int i = 3;
double diff = d  i;
System.out.print((int)diff  0.5);
Signup and view all the answers
What will be the output of the following code?
double a = 7;
int b = (int) (a / 2);
double c = (double) b / 2;
System.out.print(b);
System.out.print(" ");
System.out.print(c);
Signup and view all the answers
What will the following code output?
double p = 10.6;
double n = 0.2;
System.out.println((int) (p + 0.5));
System.out.print((int) (n  0.5));
Signup and view all the answers
What is the issue with the following code?
int num1 = 5;
int num2 = 10;
double ans = num1 / num2;
System.out.print(ans);
Signup and view all the answers
Does the following code segment work as intended?
double len1;
double len2;
double len3;
double total = len1 + len2 + len3;
int minLength = (int) (total + 0.5);
System.out.print(minLength);
Signup and view all the answers
What should be done in the following code to get the expected output?
double fact1 = 1 / 2;
double fact2 = 3 * 4;
double product = fact1 * fact2;
System.out.println(product);
Signup and view all the answers
Study Notes
Java Variable Manipulations and Output

Card 1:
 Initial values:
j = 10
,k = 8
 After operations:
j
becomes12
,k
becomes20
 Output:
12 20
 Initial values:

Card 2:
 Variable
x
starts at0
 Various increments lead to a final value of
4
 Output:
4
 Variable

Card 3:
 Variable
num
starts at5
 After applying
num *= 2
andnum %= 6
, final value is4
 Variable

Card 4:
 Given uninitialized variables
x
andy
,z
gets assignedx

z
is changed to(x / y) + 2
 Given uninitialized variables
Floatingpoint and Integer Operations

Card 5:
 Initial sum of
15 + 20
results in35
 After division by
2
,avg
equals to17.5
stored in a double variable
 Initial sum of

Card 6:
 Initial values:
x = 4
,y = 6
 Both
x
andy
update with subtraction and addition, resulting in decreased values
 Initial values:
Casting and Integer Conversion

Card 7:
 Difference calculation between
d = 0.25
andi = 3
yields2.75
 Final output after casting:
2.5
 Difference calculation between

Card 8:

a = 7
,b
calculated to be3
via explicit casting  Output of
b
andc
results in:3 1.5

Output through Integer Division

Card 9:

p = 10.6
,n = 0.2
 After rounding, outputs
11
and0


Card 10:
 Division of two integers does not type promote, leading
ans
to be0.0
 Suggests casting to double for accurate division result
 Division of two integers does not type promote, leading
Length Summation and Rounding

Card 11:
 Total length calculated from three doubles
 Casting to integer with rounding rules only works correctly under specific conditions
Fraction Operations and Cast Requirements

Card 12:
 Result of
1/2
is0
due to integer division, impacted by lack of double casting  Calculation outcome should have considered casting for accurate floatingpoint representation
 Result of
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your understanding of basic Java programming concepts with this set of multiplechoice questions. Focus on variable manipulation, arithmetic operations, and their outputs. Perfect for reinforcing your knowledge before moving on to more advanced topics.