Any java expert who knows the corecct answers for these?

Question

Q1:charAt() is used to obtain a character at specified index?

a)True

b)Fales

Q2:The java program is enclosed in a class definition ?

a)True

b)Fales

Q3:The for loop repeats a set of statements a certain number of times until a condition is matched?

a)True

b)Fales

Q4:The input to a method is called a ?

a)Parameter

b)args

c)Argument

d)Variable

Q5::Evaluate the following java expression , if x=3, y=5,and z=10

++z + y-y + z + x++

a)23

b)24

c)22

d)25

Q6:from the following statements which is a disadvantage of an java array ?

a)An array holds only one type of data

b)An array knows only its type that it contains.Array type is checked at the compile-time.

c)An array has its size that is known as array length.

d)An array can hold primitive types data.

Q7: place a space after each comma (,) in an argument list makes programs less readable ?

a)True

a)Fales

Q8:in java a string type is a class?

a)True

b)Fales

Q9:By convention, classes begin with a lower case letter?

a)True

b)Fales

Q10:: "\ is used to print a single-quote character in java?

a)True

b)Fales

Answer 1

Hi! Here are the answers:

1) True

Explanation: charAt(int index) is used to obtain the character at a specific index.

2) True

Explanation: You'll be working from within a class when coding in Java.

3) True

Explanation: The condition in a for loop will be checked continually until it evaluates to false, at which point the for loop will no longer execute.

4) C)

Explanation: The "template" for the method is its parameters. What you actually pass between the parentheses of a method is the argument.

5) D)

Explanation: ++z will increment and store the new value of z immediately. x++ will increment the value, but x won't actually be changed to its incremented version until later.

6) A)

Explanation: Other data structures, like maps, can hold different data types, but arrays are limited.

7) False

Explanation: Putting spaces between words and sections of code always make it more readable.

8) True

Explanation: The String type is indeed a built-in class in Java.

9) False

Explanation: Classes will always begin with an uppercase letter.

10) False

Explanation: On the contrary, a \' is the escape character to print single quote.