WorksheetsJava Programming Basics
Total questions: 10
Worksheet time: 5mins
What is wrong with the following Java variable declaration?
int 1stNumber = 23;
There is no data type called 'int'
Variable names can not start with a digit
Variable names can not contain digits
Number 23 can not be stored in an int
Which of the following variable declarations are incorrect?
a. float mySalary = 3500.77;
b. int my1stSalary = 2300;
c. double salaryOne = 3450.0f;
d. double salary(1);
a and b
a and d
c and d
b and d
Following set of data items are to be stored about a student
a. Students name
b. Students current age in years
c. Students weight in kg
d. Students gender
Which of the following data types will match best with these
a. String
b. int
c. String
d. String
a. String
b. float
d. int
d. int
a. String
b. int
c. float
d. boolean
a. String
b. int
c. float
d. char
Which of the following data is the 'smallest' data type that can be used to hold the 'distance between Earth to Mars' in km.
(Average distance between Earth and March is 234,460,000 km)
byte
int
long
short
Which of the following statement prints smith\exam1\test.txt?
System.out.println("smith\exam1\test.txt");
b.System.out.println("smith\\exam1\\test.txt");
c.System.out.println("smith\"exam1\"test.txt");
d.System.out.println("smith"\exam1"\test.txt");
17. What is the output of System.out.println('z' - 'a')?
25
26
x
Generates and error
What is true about the provided code?
count < 100 is always true at Point A
count < 100 is always true at Point B
count < 100 is always false at Point B
count < 100 is always true at Point C
count < 100 is always false at Point C
What is the output of the following code?
x is 0
x is 1
x is 2
x is 3
x is 4
What will be displayed when the following code is executed?
6 3 0
6 3
3 0
3 0 -3
0 -3
Considering the provided code , what would be the best match for the 'missing method body'?
return "number";
b.System.out.println(number);
c.System.out.println("number");
return number;
