Question 1

float f = 42.0f;
float[] f1 = new float[2];
float[] f2 = new float[2];
float[] f3 = f1;
long x = 42;
f1[0] = 42.0f;

Which are true
Option 1. f1 == f2
Option 2. f1 == f3
Option 3. f2 == f1[1]
Option 4. x == f1[0]
Option 5. f == f1[0]

Accepted Answer

2, f1 == f3
4, x == f1[0]
5, f == f1[0]

Question 2

int dailywage = 4;

int number_of_days = 5;

int salary = number_of_days++ * --dailywage * dailywage++ * number_of_days--;

salary =- dailywage;

System.out.println(dailywage + " " + number_of_days + " " + salary);

Accepted Answer

4 5 266

Question 3

The for loop executes a given statement or block of statements repeatedly as long as the value of the expression is true.

Accepted Answer

false

Question 4

What does the code output?

int p=0;

while (p<3)

{

p++;

System.out.println(p);

}

Accepted Answer

1

    2

    3

Question 5

int a[] = {2};
a = new int[]{5};
int x = a[0];
while (x >= 0)
{
process(a);
x = a[0];
x--;
System.out.println("x = " + x);
}

private static void process(int[] a)
{
int x = a[0]--;
x++;
}

Accepted Answer

x = 3
x = 2
x = 1
x = 0
x = -1

Question 6

They return the result of shifting the bits of the left operand by the number of positions specified by the right operand.

Accepted Answer

shift operator

Question 7

Which of the following declares an array of integers named number?

Accepted Answer

int [ ] number ;

Question 8

What is the Enhanced for Loop (foreach)?

Accepted Answer

It transverses all elements of a collection.

Question 9

It consists of three operands and is used to evaluate Boolean expressions

Accepted Answer

Ternary operator

Question 10

arithmetic operator is a mathematical function that takes two operands and performs a calculation on them.

Accepted Answer

true

Question 11

if (true) { int[] str = {5}; String i = "" + str[0]; System.out.print(i); }
System.out.print("-"); {
int[] str = {1, 2}; System.out.print(str[1]);}System.out.print("-");{
String str = "I like Java Programming Language"; System.out.print(str);}
System.

Accepted Answer

5-2-I like Java Programming Language-124

Question 12

What is the result of -7%2

Accepted Answer

-1

Question 13

{
int marks[] = new int[4];
marks = new int[] {87, 76, 84, 57};
for(int i = 0; i < 4; i++)
{
System.out.println(marks[i]);}
{
int marks[] = new int[4];
marks = new int[{87, 76, 84, 57}];
for(int i = 0; i < 4; i++)
{
System.out.println(marks[i])

Accepted Answer

ArrayOutput2 does not compile, but ArrayOutput1 will compile

Question 14

What is the output of the following code fragment:

int[] ar = {2, 4, 6, 8 };

ar[0] = 23;

ar[3] = ar[1];

 

System.out.println( ar[0] + " " + ar[3] );

Accepted Answer

23 4

Question 15

bitwise operator is an operator used to perform bitwise operations on bit patterns or binary numerals that involve the manipulation of individual bits

Accepted Answer

true

Question 16

Consider the following codes:

int x=2;

System.out.println(++x);

What will be the EXACT output?

Accepted Answer

3

Question 17

int c = 0, e = 50;
        boolean b = (c == 1) && (++e < 100);
        System.out.println("e = " + e);
        boolean f = (++e < 100) && (c == 1);
        System.out.println("e = " + e);

Accepted Answer

e = 50
e = 51

Question 18

boolean lampX = false, result;

        boolean lampY = true;

        result = lampY || lampX;

        System.out.println("Lamp switch-on " + result);

        result = lampY | lampX;

        System.out.println("Lamp switch-on " + result);

Accepted Answer

Lamp switch-on true
Lamp switch-on true

Question 19

What will be the output of the following program?

        int a = 0152;

        a *= --a / 2 * 2;

        System.out.println("a=" + a);

Accepted Answer

a=11024

Question 20

For which of the following applications is an array NOT suitable:

Accepted Answer

Holding the name, social security number, age, and income of one individual.

Question	Answer
float f = 42.0f; float[] f1 = new float[2]; float[] f2 = new float[2]; float[] f3 = f1; long x = 42; f1[0] = 42.0f; Which are true Option 1. f1 == f2 Option 2. f1 == f3 Option 3. f2 == f1[1] Option 4. x == f1[0] Option 5. f == f1[0]	2, f1 == f3 4, x == f1[0] 5, f == f1[0]
int dailywage = 4; int number_of_days = 5; int salary = number_of_days++ * --dailywage * dailywage++ * number_of_days--; salary =- dailywage; System.out.println(dailywage + " " + number_of_days + " " + salary);	4 5 266
The for loop executes a given statement or block of statements repeatedly as long as the value of the expression is true.	false
What does the code output? int p=0; while (p<3) { p++; System.out.println(p); }	1 2 3
int a[] = {2}; a = new int[]{5}; int x = a[0]; while (x >= 0) { process(a); x = a[0]; x--; System.out.println("x = " + x); } private static void process(int[] a) { int x = a[0]--; x++; }	x = 3 x = 2 x = 1 x = 0 x = -1
They return the result of shifting the bits of the left operand by the number of positions specified by the right operand.	shift operator
Which of the following declares an array of integers named number?	int [ ] number ;
What is the Enhanced for Loop (foreach)?	It transverses all elements of a collection.
It consists of three operands and is used to evaluate Boolean expressions	Ternary operator
arithmetic operator is a mathematical function that takes two operands and performs a calculation on them.	true
if (true) { int[] str = {5}; String i = "" + str[0]; System.out.print(i); } System.out.print("-"); { int[] str = {1, 2}; System.out.print(str[1]);}System.out.print("-");{ String str = "I like Java Programming Language"; System.out.print(str);} System.	5-2-I like Java Programming Language-124
What is the result of -7%2	-1
{ int marks[] = new int[4]; marks = new int[] {87, 76, 84, 57}; for(int i = 0; i < 4; i++) { System.out.println(marks[i]);} { int marks[] = new int[4]; marks = new int[{87, 76, 84, 57}]; for(int i = 0; i < 4; i++) { System.out.println(marks[i])	ArrayOutput2 does not compile, but ArrayOutput1 will compile
What is the output of the following code fragment: int[] ar = {2, 4, 6, 8 }; ar[0] = 23; ar[3] = ar[1]; System.out.println( ar[0] + " " + ar[3] );	23 4
bitwise operator is an operator used to perform bitwise operations on bit patterns or binary numerals that involve the manipulation of individual bits	true
Consider the following codes: int x=2; System.out.println(++x); What will be the EXACT output?	3
int c = 0, e = 50; boolean b = (c == 1) && (++e < 100); System.out.println("e = " + e); boolean f = (++e < 100) && (c == 1); System.out.println("e = " + e);	e = 50 e = 51
boolean lampX = false, result; boolean lampY = true; result = lampY \|\| lampX; System.out.println("Lamp switch-on " + result); result = lampY \| lampX; System.out.println("Lamp switch-on " + result);	Lamp switch-on true Lamp switch-on true
What will be the output of the following program? int a = 0152; a = --a / 2 2; System.out.println("a=" + a);	a=11024
For which of the following applications is an array NOT suitable:	Holding the name, social security number, age, and income of one individual.

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JAVA 3 and 4