Java chapter 4
The = operator and that == operator performs the same operation
False
import java.text.DecimalFormat;
Import for the DecimalFormat Class
relational operators
In most cases, the Boolean expression, used by the if statement, uses ______
String objects
In most cases, you cannot use the relational operators to compare two ______ ______
equalsIgnoreCase compareToIgnoreCase
In order to compare two String objects that might have different case use what?
case sensitive
In the String class the equals and compareTo methods are _________ ________ .
unary
Java provides one _____(!) logical operator to reverse the truth of a boolean expression.
binary logical operators
Java provides two ______ (&& and ||) that are used to combine boolean expressions.
Short-circuit Evaluation
Logical AND and logical OR operations perform ________ ________ of expressions. && ||
&& || !
Logical operator
this is an if statement that appears inside another if statement
Nested if statement
!
Not
This is an empty statement that does nothing
Null statement
Conditionally Executed
Only performed when a certain condition exists
||
Or
>,<,== are
Relational operator
The ______ of a variable is limited to the block in which it is declared.
Scope
method
The scope of a local variable begins at the point it is declared and terminates at the end of the ________.
This determines whether two different String objects contain the same string
The stringCompare method
evaluate a char, byte, short, int, or string
The switch statement can evaluate a ____________, _______, ________, ________ value and make decisions based on the value.
The conditional operators take this many operands
Three
False || True
True
Flag
________ can be tested to see if the condition has changed.
Characters
________ can be tested using the relational operators.
Unicode
________ is stored as a sixteen (16) bit number.
if statement
_________ decides whether a section of code executes or not.
Parenthesis
__________ can be used to force the precedence to be changed.
Boolean expression
__________ is any variable or calculation that results in a true or false condition.
Reference
__________ variables contain the address of the object they represent.
Switch statement
allows you to use an ordinal value to determine how a program will branch.
number = x > y ? 10 : 5;
if(x > y) number = 10; else number = 5;
How does the character "A" compare to the character "B"?
"A" is less then "B"
When determining whether a number is inside a range it's best to use this operator
&&
Flag
A Boolean valuable that signals when some conditions exists in the program
Conditional operator
A shorthand method of expressing a simple if else statement
&&
And
This type of a expression has a value of either true or false
Boolean express
To create a block of statements you and close the statements in these
Braces {}
Without the ____ statement, the program "falls through" all of the statements below
Break
You can use the ______ operator to create short expressions that work like if else statements
Conditional
The if statement is an example of
Decision structure
The section of a switch statement has branched to if none of the case values match the testExpression
Default
Relational Operator
Determines whether a specific relationship exists between two values
!true
False
Sequence Structure
Statements that execute in sequence
higher
The ! operator has a _______ order of precedence than the && and || operators.
lower
The && and || operators have a ________ precedence than relational operators like < and >.
equalsIgnoreCase
The case of the characters and the strings is Ignored
And else always clause goes with
The closest previous if clause that doesn't already have it's own else clause
DecimalFormat class
The decimal format class can be used to format the appearance of floating point numbers rounded to a specific number of decimal places; Must be imported
Trailing else
The last else clause that doesn't have an if statement following it
Random numbers
Used in games, used and computer security to encrypt data, used and simulation programs
statement2; statement3;
What statement would run if (if statement is false) if (expression) statement1; statement2; statement3;
come into scope
When a program enters a section of code where a variable has scope, that variable has _______ _______ _____, which means the variable is visible to the program
Lexicographical comparison
When you use the compareTo method to compare two strings, the strings are compared character by character
expression1 ? expression2 : expression3 x > y ? z = 10 : z = 5;
conditional operator format