Debugging and Errors

Question 1

This is an illegal operation performed by the user which results in the abnormal working of the program.

Answer 1

Error

Question 2

This are often remain undetected until the program is compiled or executed.

Answer 2

Programming Errors

Question 3

True or False:
Some of the errors inhibit the program from getting compiled or executed.

Answer 3

True

Question 4

True or False:
Errors should be removed before compiling and executing

Answer 4

True

Question 5

This occur or we can say, are detected during the execution of the program.

Answer 5

Run Time Error

Question 6

A Runtime Error can be discovered when the user enters an _______

Answer 6

Invalid Data

Question 7

This occur when a program does not contain any syntax errors but asks the computer to of something that the computer is unable to reliable do.

Answer 7

Runtime Error

Question 8

True or False:
During compilation, the compiler has no technique to detect a Runtime Error

Answer 8

True

Question 9

What is the meaning of JVM?

Answer 9

Java Virtual Machine

Question 10

This can detects the Runtime Error while the program is running.

Answer 10

Java Virtual Machine

Question 11

How to handle the Runtime Error during a runtime?

Answer 11

Put the error code inside the try block and catch the error inside the catch block.

Question 12

How to know if you are having a runtime error?

Answer 12

1. if the user inputs a data of string format when the computer is expecting an integer, there will be a runtime error.
2. Assigning/Retrieving Value from an array using an index which is greater than the size of the array

Question 13

These are those errors which prevent the code from running, because of an incorrect syntax such as a missing semicolon at the end of a statement or a missing bracket, class not found, etc.

Answer 13

Compile Time Error

Question 14

How can a Compile Time Error detected?

Answer 14

By the Java Compiler and an error message is displayed on the screen while compiling.

Question 15

Compile Time Errors are sometimes also referred to as ____

Answer 15

Syntax Errors

Question 16

These kind of errors are easy to spot and rectify, because the java compiler finds them for you.

Answer 16

Compile Time Error

Question 17

This will tell you which piece of code in the program got in trouble and its best guess as to what you did wrong.

Answer 17

The Compiler

Question 18

True or False:
The Compiler indicates the exact line where the error is, or sometimes the line just before it.

Answer 18

True, but if the problem is with incorrectly nested braces, the actual error may be at the beginning of the block. In effect, syntax errors represent grammatical errors in the use of the programming language.

Question 19

What are the examples of Compile Time Error?

Answer 19

1. Misspelled Variable name or Method Names
2. Missing Semicolons
3. Missing parenthesis, square brackets, or curly braces

Question 20

This is when your program compiles and executes, but does the wrong thing or returns an incorrect result or no output when it should be returning an output.

Answer 20

Logical Error

Question 21

True or False:
These errors are detected neither by the compiler nor by JVM.

Answer 21

True

Question 22

True or False:
The Java system has no idea what your program is supposed to do, so it provides no additional information to help you find the error.

Answer 22

True

Question 23

What are the examples of Logical Error?

Answer 23

1. Accidentally using an incorrect operator on the variables to perform an operation
2. Displaying the wrong message

Question 24

These statements are called loops, and are used to repeat the same code multiple times in succession.

Answer 24

Repetition Statements

Question 25

True or False:
The number of repetitions is based on criteria defined in the loop structure, usually a true/false expression

Answer 25

True

Question 26

What are the three loop structures in Java?

Answer 26

1. While Loops
2. Do-while Loops
3. For Loops

Question 27

This is a test condition that is evaluated to decide whether the loop should repeat or not.

Answer 27

Boolean Expression

Question 28

In a Boolean expression, this means run the loop body again.

Answer 28

True

Question 29

In a Boolean expression, this means quit.

Answer 29

False

Question 30

These both follow the same basic flowchart.

Answer 30

While and Do-While Loop

Question 31

The only exception in this loop is that the test expression is checked first

Answer 31

While Loop

Question 32

The only exception in this loop is that the loop “body” is executed first

Answer 32

Do-while Loop

Question 33

This is the most convenient with counting loops. This loops are based on a counting variable, usually a known number of iterations.

Answer 33

For loop