WorksheetsQuiz
Total questions: 28
Worksheet time: 16mins
1. Which of this method is given parameter via command line arguments?
a) main()
b) recursive() method
c) Any method
d) System defined methods
What are the Type Conversions available in Java language?
A) Narrowing Type Conversion
B) Widening Type Conversion
A and B
D) None of the above
What is the output of the below Java code snippet?
char ch = 'A';//ASCII 65
int a = ch + 1;
ch = (char)a;
System.out.println(ch);
A) 66
B) A
C) B
D) 65
Which type of loop is best known for its boolean condition that controls entry to the loop?
A. do-while loop
B. for (traditional)
C. for-each
D. while
What will be the Output of the below code:
public class Demo{
public static void main(String[] arr){
}
public static void main(String arr){
}
}
a) Nothing
b) Error
C) Finite
d) Hii
char is 2 byte in storage?
True
False
Name the data type: '3'
int
char
String
None of the above
What data type would you use for storing the number of students in a class?
boolean
String
double
int
What is the output of the below Java code snippet?
char ch = 'A';//ASCII 65
int a = ch + 1;
ch = (char)a;
System.out.println(ch);
A) 66
B) A
C) B
D) 65
What is the output of the following code snippet?
int i = 0; for(i = 0 ; i < 5; i++)
{ }
System.out.println(i);
A. 5
B. 0
C. 4
D. Compilation Error
Function of the Scanner class to accept a float literal from the user is
nextInt( )
hasNext( )
next( )
nextFloat( )
Predict the value of k,
int k =10;
k=k+k++;
11
20
21
22
Which of the following key word is optional in Exception handling program
try
catch
finally
throw
What is an exception
Error occurred during the execution of a program
Bug occurred during the compile time of a program
Simply an Error
It is related to input values
Exception classes belongs to following package
import java.io.*
import java.lang.*
import java.util.*
import java.lang.Exception.*
Choose an exception if attempt to divide number by zero
int number = 89 / 0;
System.out.println("The answer is " + number);
ArithmeticException
NullPointerException
NumberFormatException
ArrayIndexOutOfBoundException
class exception_handling
{ public static void main(String args[])
{ try
{ int a, b;
b = 0;
a = 5 / b;
System.out.print("A");
} catch(ArithmeticException e)
{ System.out.print("B");
}
finally
{ System.out.print("C");
}
}
}
A
B
AC
BC
Find the output for the following.
public class IncDec
{
public static void main(String s[])
{
int a = 1;
int b = 2;
int c;
int d;
c = ++b;
d = a++;
c++;
System.out.println("a = " + a);
System.out.print("b = " + b);
System.out.println("c = " + c);
System.out.print("d = " + d);
}
}
a = 2 b = 3 c = 4 d = 1
a = 2 b = 3 c = 4 d = 1
Program does not compile.
a = 1 b = 2 c = 4 d = 2
Q 1. Consider the following Java methods.
int func2(int w) { return w * 3; } int func1 (int a, int b) { int n = a + b; return 2 + func2(n); } int start() { int z = 4; return func1(z, 1) - 3; }
14
0
Consider the following Java methods.
int f(int x) { return x*2 - 1; } int h() { int a = 3; int b = f(a) + f(4); return b; }
12
15
Consider the following method g.
int g (int a) { if (a < 9) { return 9; } if (a < 7) { return 7; } if (a < 4) { return 4; } return 0; }
12
36
Consider the following method k.
int k (int a, int b) { if (a < b) { if (b > 4) { return 0 ; } else { return 1; } } else { if (a > 4) { return 2; } else { return 3; } } }
For which of the values a and b would 2 be the return value?
a=12, b= 12
a=6, b=6
a=0, b= 0
Consider the following method play, and assume appropriate import statements are there for classes used in this function.
public void play () { Frog fred = new Frog(); Cat jiang = new Cat(); fred.hop(4); jiang.jump(5, fred); String greet = That is all"; fred.say(greet, 3); }
Only say
hop and say
Only jump
hop,
jump and say
Only hop
