Please for java programming language Question 1 Which of the following statement

Question

Please for java programming language

Question 1

Which of the following statements uses a compound assignment operator?

index = index + 1;

index++;

index += 1;

both b and c

all of the above

1 points

Question 2

Using the BigDecimal class, you can

store numbers with a maximum of 16 significant digits

avoid rounding errors that may occur otherwise in business applications

both A and B

none of the above

1 points

Question 3

If int variable x = 100, float variable y = 1.587F, and double variable z = 4.8, what does the following expression return?
x + Math.round(y) + (int) z

105

107

105.6

106

1 points

Question 4

If the double variables x = 2.5 and y = 4.0, what is the value of z after this statement is executed?
int z = (int) x + (int) y;

6.0

7

6.5

6

1 points

Question 5

You can store a value that can’t be changed as an application executes in a ____________.

1 points

Question 6

Explicit casts must be used to perform

narrowing conversions

widening conversions

any conversion between two data types

1 points

Question 7

Which of these data types are used to store numbers with decimal positions?

byte

1 points

Question 8

What is the range of values that x can hold after this statement is executed?
double x = Math.random() * 10 + 100;

100 <= x < 1100

100 <= x < 101

100 <= x < 200

100 <= x < 110

1 points

Question 9

Unlike a variable, a constant can’t

be declared with block scope

be initialized when it’s declared

be declared within a method

change in value as an application runs

1 points

Question 10

Which of the following is not a binary operator?

+

/

++

%

1 points

Question 11

If the variable named input is 755, what is the value of r after these statements are executed?
NumberFormat n = NumberFormat.getNumberInstance();
n.setMinimumFractionDigits(3);
String r = n.format(input);

.755

760.000

755.000

755

1 points

Question 12

The decrement operator is called a ____________ operator because it operates on a single operand.

a.

index = index + 1;

b.

index++;

c.

index += 1;

d.

both b and c

e.

all of the above

Explanation / Answer

Question 1: both b and c Question 2: both A and B Question 3: 106 Question 4: 6 Question 5: Constant Question 6: any conversion between two data types Question 7: double, float Question 8: 100

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