Boolean Operators and Variables in Java

For University of Dayton CPS150

Boolean variable

Stores true or false conditions.

George Boole

Mathematician who pioneered logic study.

Flag

Another name for a Boolean variable.

boolean data type

Has two values: true and false.

Declaration

Defines a Boolean variable in Java.

&& operator

Logical AND; true if both conditions are true.

|| operator

Logical OR; true if at least one condition is true.

Liquid water condition

True if temperature is between 0 and 100 degrees.

Truth table

Shows results of Boolean expressions.

Lower precedence

Boolean operators evaluated after relational operators.

Relational expressions

Conditions compared before Boolean operators.

Inversion

Using ! operator to reverse Boolean condition.

! operator

Evaluates to true if condition is false.

Not liquid condition

True if temperature is

Boolean operator examples

Demonstrates various Boolean expression evaluations.

Error in expression

Invalid comparisons or operations on Boolean values.

frozen variable

Boolean indicating if something is frozen.

Comparison program

Java program demonstrating Boolean expressions.

Scanner class

Used for input in Java.

Close together condition

True if two numbers differ by less than 0.01.

Same sign condition

True if both numbers are positive or negative.

One apart condition

True if two numbers differ by exactly 1.

Boolean expression

Combination of conditions evaluated to true or false.

Program logic

Flow of decisions based on Boolean evaluations.

Complex decisions

Involves combining multiple Boolean conditions.

Condition evaluation

Determining truth value of expressions.

Java operators

Symbols that perform operations on variables.

Flowchart

Visual representation of decision-making process.

Boolean values

The only two values: true and false.

Condition combining

Using operators to link multiple Boolean conditions.

Higher precedence

&& evaluated before || in expressions.

Negation

Using ! to reverse a Boolean value.

Logical conditions

Expressions that yield true or false.

Temperature testing

Evaluating if temperature indicates liquid water.

Boolean comparisons

Assessing relationships between Boolean variables.

Java syntax

Rules for writing valid Java code.

Comparison output

Results printed based on Boolean evaluations.

Boolean logic

Rules governing true/false evaluations.

Variable assignment

Setting a Boolean variable to true or false.

Boolean expressions

Mathematical statements evaluated as true or false.

Program structure

Organization of code for logical flow.