Java Programing Basics

Question 1

String Literal

Answer 1

Text in double quotes “

Question 2

Comment

Answer 2

is text a programmer adds to code, to be read by humans to better understand the code but ignored by the compiler. Two common kinds of comments exist:
single-line comment
multi-line comment

Question 3

Single-line Comment

Answer 3

starts with // and includes all the following text on that line. Single-line comments commonly appear after a statement on the same line.

Question 4

Multi-line Comment

Answer 4

starts with /* and ends with /, where all text between / and */ is part of the comment. A multi-line comment is also known as a block comment.

Question 5

Whitespace

Answer 5

refers to blank spaces (space and tab characters) between items within a statement and blank lines between statements (called newlines). A compiler ignores most whitespace.

Question 6

Syntax Error

Answer 6

is to violate a programming language’s rules on how symbols can be combined to create a program. An example is forgetting to end a statement with a semicolon.

Question 7

Because a syntax error is detected by the compiler, a syntax error is known as a type of

Answer 7

Compile-time Error

Question 8

Logic Error

Answer 8

also called a bug, is an error that occurs while a program runs. For example, a programmer might mean to type numBeans * numJars but accidentally types numBeans + numJars (+ instead of *). The program would compile but would not run as intended.

Question 9

int

Answer 9

is the most commonly used integer type

Question 10

long

Answer 10

is used for integers expected to exceed about 2 billion