# Quiz Discussion

What is the output of below code snippet?

   double a = 0.02;
double b = 0.03;
double c = b - a;
System.out.println(c);

BigDecimal _a = new BigDecimal("0.02");
BigDecimal _b = new BigDecimal("0.03");
BigDecimal _c = b.subtract(_a);
System.out.println(_c);

Course Name: Java

• 1]

0.009999999999999998
0.01

• 2]

0.01
0.009999999999999998

• 3]

0.01
0.01

• 4]

0.009999999999999998
0.009999999999999998

##### Solution
No Solution Present Yet

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# Quiz
1
Discuss

What will be the output of these statement?

public class output {
public static void main(String args[])
{
double a, b, c;
a = 3.0/0;
b = 0/4.0;
c = 0/0.0;

System.out.println(a);
System.out.println(b);
System.out.println(c);
}
}

• 1]

Infinity

• 2]

0.0

• 3]

NaN

• 4]

all of the mentioned

##### Solution
2
Discuss

Which one is a valid declaration of a boolean?

• 1]

boolean b1 = 1;

• 2]

boolean b2 = ‘false’;

• 3]

boolean b3 = false;

• 4]

boolean b4 = ‘true’

##### Solution
3
Discuss

Which data type value is returned by all transcendental math functions?

• 1]

int

• 2]

float

• 3]

double

• 4]

long

##### Solution
4
Discuss

What is the output of this program?

public class array_output {
public static void main(String args[])
{
char array_variable [] = new char;
for (int i = 0; i < 10; ++i) {
array_variable[i] = 'i';
System.out.print(array_variable[i] + "" );
i++;
}
}
}

• 1]

i i i i i

• 2]

0 1 2 3 4

• 3]

i j k l m

• 4]

None of the mentioned

##### Solution
5
Discuss

What is the base of BigDecimal data type?

• 1]

Base 2

• 2]

Base 8

• 3]

Base 10

• 4]

Base e

##### Solution
6
Discuss

What is the output of this program?

public class mainclass {
public static void main(String args[])
{
char a = 'A';
a++;
System.out.print((int)a);
}
}

• 1]

66

• 2]

67

• 3]

65

• 4]

64

##### Solution
7
Discuss

What is the numerical range of a char data type in Java?Which of these coding types is used for data type characters in Java?

• 1]

-128 to 127 ASCII

• 2]

0 to 256 ISO-LATIN-1

• 3]

0 to 32767 UNICODE

• 4]

0 to 65535 UNICODE

##### Solution
8
Discuss

Which of the following are legal lines of Java code?

   1. int w = (int)888.8;
2. byte x = (byte)100L;
3. long y = (byte)100;
4. byte z = (byte)100L;
• 1]

1 and 2

• 2]

2 and 3

• 3]

3 and 4

• 4]

All statements are correct

##### Solution
9
Discuss

An expression involving byte, int, and literal numbers is promoted to which of these?

• 1]

float

• 2]

byte

• 3]

long

• 4]

int

##### Solution
10
Discuss

Which of these values can a boolean variable contain?

• 1]

True & False

• 2]

0 & 1

• 3]

Any integer value

• 4]

True

# Quiz