Java Control Statements Interview Questions With Answers
Control Statements
Q::
1 What are the programming constructs?
Ans:
There are mainly three programming constructors
a) Sequential
b) Selection -- if and switch statements
c) Iteration -- for loop, while loop and do-while loop
Q::2) class conditional {
public static void main(String args[]) {
int i = 20;
int j = 55;
int z = 0;
z = i < j ? i : j; // ternary operator
System.out.println("The value assigned is " + z);
}
}
What is output of the above program?
Ans: The value assigned is 20
Q::3 The switch statement does not require a break.
a)True
b)False
Ans: b
Q::4 The conditional operator is otherwise known as the ternary operator.
a)True
b)False
Ans: a.
Q::5 The while loop repeats a set of code while the condition is false.
a)True
b)False
Ans: b.
Q::6) The do-while loop repeats a set of code
at least once before the
condition is tested.
a)True
b)False
Ans: a.
Q::7) What are difference between break and continue?
Ans: The break keyword halts the execution of the current loop and forces
control out of the loop.
The continue is similar to break, except that instead of halting the
execution of the loop, it starts the next iteration.
Q::8) The for loop repeats a set of statements a certain number of times
until a condition is matched.
a)True
b)False
Ans: a.
Q::9) Can a for statement loop
indefinitely?
Ans : Yes.
Q::10) What
is the difference between while statement and a do statement?
Ans: A while statement checks at the beginning of a loop to see whether
the next loop iteration should occur.
A do statement checks at the end of a loop to see whether the next
iteration of a loop should occur. The do statement will always execute the
body of a loop at least once.
Java Control Statements Interview Questions With Answers
