Week One Quiz

Learning java in just 5 weeks...

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Please answer the following questions to proceed to week two tutorial

Q.1: What is the reason that pointer was eliminated from JAVA?

a) If forgotten to free the memory allotted to a variable it may crash.
b) Using pointers was a potential threat to security as pointer break security.
c) Pointers are used to built program such as computer viruses and hacking program.
d) All of the above.

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Q.2: What is the right method to print the contents to display in monitor?

a) print ("My First Java Program");
b) printstream obj.print("My First Java Program");
c) System.out.println("My First Java Program");
d) None of the above.

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Q.3: What is the main difference between print() and println()?

a) Both are not used in Java programming.
b) Both are used to print text but print () method prints text and retains cursor in the same line.
c) Both are used to print text but println () method prints text and kicks the cursor to the next line.
d) Both a & b are correct.

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Q.4: Constants represent fixed values which should be written in the following naming convention?

a) Constants should be written by using all capital letters
b) The first word starts with a small letter and second word onwards start with a capital letter.
c) The first word and other consecutive words all start with capital letter.
d) All keywords should be written by using all small letter.

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Q.5: what does 0.01 number represent in java data type category?

a) short
b) int and float
c) double and float
d) double

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Q.6: The following code snippet falls into what operators category?
System.out.println("x>y : "+(x>y));

a) Arithmetic Operator
b) Relational Operator
c) Logical Operator
d) Bitwise Operator

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Q.7: Look at the following code snippet and find out the right answers?

public class MyProgram{ public static void main(String args[]){ int x; x=1; //beginning number is 1 do{ System.out.println(x); ++x; }while(x<=10); } }

a) The first number will display 1 as value of x is already 1.
b) x++ will increment the value of x by 1 hence the value of x becomes 2.
c) As long as x value does not exceed 10, the loop repeats and number displays from 1 to 10.
d) None of the above.
e) a, b, and c all are correct.

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Q.8 Find out incorrect answer from the following list?

a) System.exit(0)does not exist in Java
b)return statement is used inside a method to come out of it.
c) System.exit(0)is used in any method to come out of the program.
d) System.exit(0) terminates the program normally whereas
System.exit(1) terminates the program because of the some program error encountered.

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Q.9 Arrays are stored on what memory?

a) Arrays are stored in Static Memory.
b)Static Memory is used to store arrys as well as variable, object etc. in Java.
c) Arrays are stored in Dynamic memory by JVM.
d) Arrays are stored in Dynamic Memory and variable or object are stored in Static Memory.

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Q.10 Write a code that puts 45 into row 2 column 3 ?

------	Column 0	Column 1	Column 2	Column 3	Column 4
Row 0	55	65	75	85	95
Row 1	56	66	76	86	96
Row 2	57	67	77	87	97

grades[0][0], grades[0][1], grades[0][2], grades[0][3], grades[0][4];
grades[1][0], grades[1][1], grades[1][2], grades[1][3], grades[1][4];
grades[2][0], grades[2][1], grades[2][2], grades[2][3], grades[2][4];

a) grades[3][2]=45;
b) grades[2][3]=45;
c) grades[3][1]=45;
d) grades[0][2]=45;

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Answers of the Week One tutorial questions

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Q.1. Correct answer is d.

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Q.2. Correct answer is c.

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Q.3. Correct answer is d.

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Q.4. Correct answer is a.

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Q.5. Correct answer is d.

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Q.6. Correct answer is b.

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Q.7. Correct answer is e.

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Q.8. Correct answer is a.

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Q.9. Correct answer is c.

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Q.10. Correct answer is b.

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