Switch Flashcards
The ________ in Java allows you to execute a specific block of code from various options, depending on the value of a variable or expressions. It serves as an alternative to multiple if-else statements, enhancing readability when handling a variable that can assume several distinct values.
switch statement
The switch statement in Java allows you to execute a specific ____________ from various options, depending on the value of a variable or expressions. It serves as an alternative to multiple if-else statements, enhancing readability when handling a variable that can assume several distinct values.
block of codes
_______ represent the values that the variable is compared against.
case labels
The switch statement in Java allows you to execute a specific block of code from various
_____, depending on the value of a variable or expressions. It serves as an alternative to
multiple if-else statements, enhancing readability when handling a variable that can assume
several distinct values.
options
The switch statement in Java allows you to execute a specific block of code from various
options, depending on the 1.____ of a 2._____ or 3.______. It serves as an alternative to
multiple if-else statements, enhancing readability when handling a variable that can assume
several distinct values.
1.value
2.variable
3.expressions
The switch statement in Java allows you to execute a specific block of code from various
options, depending on the value of a variable or expressions. It serves as an alternative to
multiple _______, enhancing readability when handling a variable that can assume
several distinct values.
if-else statements
The switch statement in Java allows you to execute a specific block of code from various
options, depending on the value of a variable or expressions. It serves as an alternative to
multiple if-else statements, enhancing 1._______ when handling a 2.______ that can assume
several distinct values.
1.readability
2.variable
Java provides two types of switch constructs:
- Switch Statements
2.Switch Expression
The traditional way to execute code of blocks based on a matched
case.
switch statements
Introduced in Java 12 (and standardized in Java 14). It allows the
switch to directly produce a value.
Switch Expression
Each type can use two style
- Colon Notation
- Arrow Notation
The older, classic format
Colon Notation
A newer, cleaner format introduced switch expression.
Arrow Notation
_______ is the ______ being tested.
variable
case labels represent the 1._____ that the 2._____ is compared against.
1.values
2.variable
The 1._______ is 2.____ but recommended, at it handles any cases explicitly covered by the
case labels
1.default case
2.optional
The default case is optional but _________, at it handles any cases explicitly covered by the
case labels
recommended
The default case is optional but recommended, at it handles any 1.____ explicitly covered by the
2._____
1.cases
2.case labels
The variable/expression in the switch must evaluate one of f the following types:
Int, type, short, char, String,, or enum.
Floating point numbers (float,double) are not allowed.
Expression Type
Expression Type:
The _________ in the switch must evaluate one f the following types;
Int, type, short, char, String,, or enum.
Floating point numbers (float,double) are not allowed.
variable/expression
Expression Type:
The variable/expression in the switch must evaluate one f the following types:
______________
Floating point numbers (float,double) are not allowed.
Int, type, short, char, String,, or enum.
Expression Type:
The variable/expression in the switch must evaluate one f the following types;
Int, type, short, char, String,, or enum.
____________ are not allowed.
Floating point numbers (float,double)
No duplicate value are allowed across case labels. Each case ends with a break (optional but recommended) to prevent “fall-through.”
Case Labels
Case Label: No ______ are allowed across case labels:
Each case ends with a break (optional but recommended) to prevent “fall-through.”
duplicate value
Case Labels: No duplicate value are allowed across case labels:
Each case ends with a break (optional but recommended) to prevent ______.
fall-through
Each case ends with a _____ (optional but recommended) to prevent ______.
break
Each case ends with a break (______ but recommended) to prevent fall-through
optional
Case Labels: No duplicate value are allowed across ______:
case labels
You can’t use a 1______ or 2._____ because the 3._______ needs to know exactly what to 4._____ when the 5._____ runs.
1.variable
2.calculation
3.computer
4.match
5.program
Each case value must be a 1.______ or a 2.____, not a 3._____ or 4._____. In switch statements, each case must have a fixed value that doesn’t change, like a number, a word, or a character.
1.constant
2.literal
3.variable
4.expression
Each case value must be a constant or a literal, not a variable or expression. In 1.______, each 2.____ must have a 3.____ that doesn’t change, like a number, a word, or a character.
- switch statements
2.case
3.fixed value
Each case value must be a constant or a literal, not a variable or expression. In switch statements, each case must have a fixed value that doesn’t change, like a 1._____, a 2.____, or a _______.
1.number
2.word
3.character
The default label is optional but is used to handle unexpected values.If no case matches and there’s no default, the program continues after the switch.
Default Case
The 1._____ is 2.____ but is used to handle 3.______If no case matches and there’s no default, the program continues after the switch.
1.default label
2.optional
3.unexpected values
The break exits the switch block. Omitting a break will cause all subsequent case blocks to execute until a break is found(fall-through behavior).
Break Statement
The break exits the switch block. Omitting a break will cause all 1._______ to execute until a break is found 2._____
1.subsequent case blocks
2.(fall-through behavior).
A 1.______ can include any number of case labels, followed by the 2._______. A crucial aspect of writing a switch statement in Java is the 3.______.Without a break, the program will continue executing the following cases, even if they don’t match the condition– a phenomenon known as ‘4._____.” Including a break ensures that the program exits the 5.______ after a matching case is executed.
1.switch block
2.code block to execute
3.break statement
4.fall-through
5.switch statement
Including a break ensures that the program 1.____ the 2._____ after a 3.____ is 4._____.
1.exits
2.switch statement
3.matching case
4. executed
1._______: In scenarios with multiple conditions, switch statements can be more 2.____ than their 3._____. By utilizing a switch statement, the computer can 4._____” to the appropriate case, potentially employing an efficient 5._____, such as a shortcut list or a rapid search.
1.Efficiency
2.efficient
3.if-else counterparts
4.swiftly”jump
5.internal method
This approach can lead to 1._____ than evaluating condition 2._______, as is done with 3.______.
1.faster performance
2.sequentially
3.if-else statements
By utilizing a switch statement, the computer can swiftly”jump” to the appropriate case, potentially employing an efficient internal method, such as a 1.______ or a 2.___.
1.shortcut list
2.rapid search
1.______: Switch statements can make 2._______clearer and more straightforward, making your code easier to read and maintain.
1.Readability
2.complex conditional logic
Readability: Switch statements can make complex conditional logic 1.____ and 2._____, making your code 3.____ to 4.___ and 5._____.
1.clearer
2.more straightforward
3.easier
4.read
5.maintain
1.____: Writing a switch statement often requires 2.____ than a 3._____ of 4._____, making your 5._____ and 6.______.
1.Simplicity
2.less syntax
3.comparable series
4.if-else statements
5.code simpler
6.more concise
In Java, 1.____ is a 2.____ introduced as part of 3.______ in 4._____ (as a preview feature) and officially released in 5.____.
1.yield
2.keyword
3.switch expressions
4.Java 13
5.Java 14
The 1._______ allows you to 2.______ from a 3._____ when 4._______ are required for a particular case. This is different from the -> arrow notation, which allows a direct return,and provides more flexibility in cases where complex logic is necessary.
1.yield keyword
2.return a value
3.switch expression
4.multiple lines of code
This is different from the -> arrow notation, which allows a 1._____,and provides more 2.____ in cases where 3._____ is 4.____.
1.direct return
2.flexibility
3.complex logic
4.necessary
Before yield, 1._______ with 2._____ were limited to 3.______. However, if you needed to perform more than one operator in case (e.g.,calculations, logging, or complex decision-making), yield enables you to do so while still returning a value from the switch expression.
1.switch expressions
2.arrow notation
3.simple one-liner operations
Before yield, switch expressions with arrow notation were limited to simple one-lineroperations. However, if you needed to perform 1.______ in case (2.______, 3._____, or 4.______), yield enables you to do so while still returning a value from the switch expression.
1.more than one operator
2.e.g.,calculations
3.logging
4.complex decision-making
1.____ enables you to do so while still 2._______ from the 3._____.
1.yield
2.returning a value
3.switch expression
1.______ is used to 2._____ from a 3._____ in a 4.____:
1.Yield
2.return a value
3.case block
4.switch expression
The ______ is applied to remove any unwanted spaces that may beaccidentally entered before or after the day case.
trim() method
The trim() method is applied to 1.____ any 2._____ that may be accidentally entered before or after the day case.
1.remove
2.unwanted spaces
