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Learn how to use the switch statement to select one of many code blocks to be executed. See syntax, examples, break and default keywords, and exercises.
- Syntax
- Break in Switch Case Statements
- Java Nested Switch Statements
- Java Enum in Switch Statement
- Default Statement in Java Switch Case
- Case Label Variations
- Conclusion
- GeneratedCaptionsTabForHeroSec
Example:
Size Printer Example Output:
Some Important Rules for Java Switch Statements
1. There can be any number of cases just imposing condition check but remember duplicate case/s values are not allowed. 2. The value for a case must be of the same data type as the variable in the switch. 3. The value for a case must be constant or literal. Variables are not allowed. 4. The break statement is used inside the switch to terminate a statement sequence. 5. The break statement is optional. If omitted, execution will continue on into the next case. 6. The default statement is optio...
A break statementis optional. If we omit the break, execution will continue into the next case. It is sometimes desirable to have multiple cases without “break” statements between them. For instance, let us consider the updated version of the above program, it also displays whether a day is a weekday or a weekend day.
We can use a switch as part of the statement sequenceof an outer switch.This is called a nested switch. Since a switch statement defines its block, no conflicts arise between the case constants in the inner switch and those in the outer switch.
Enumerations (enums) are a powerful and clear way to represent a fixed set of named constants in Java. Enums are used in Switch statements due to their type safety and readability.
default case in the Switch case specifies what code to run if no case matches. It is preferred to write the default case at the end of all possible cases, but it can be written at any place in switch statements.
Case label and switch arguments can be a constant expression. The switch argument can be a variable expression.
Switch statements in Java are control flow structures, that allow you to execute certain block of code based on the value of a single expression. They can be considered as an alternative to if-else-if statements in programming.
Learn how to use switch statements in Java to execute different code based on the value of an expression. See syntax, rules, examples, flowchart, break, default, nested and enum cases.
Learn how to use the switch statement in Java to execute one statement from multiple conditions. See examples, syntax, flowchart, and tips for using strings, break, default, and nested switch.
Learn how to use the switch statement in Java to execute a block of code among many alternatives. See examples, flowchart, break and default cases, and data types supported by switch.
Learn how to use the switch statement to execute different code paths based on the value of an expression. See examples of switch statements with int, String, and enumerated types, and how to use break and default labels.
Learn how to use switch case statements in Java to build complicated decision-making logic. See the basic syntax, the advantages over if-else statements, and some usage examples with code and output.
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Jun 21, 2022 · Learn how to use the switch statement in Java to execute different code blocks based on a given expression. See examples of syntax, cases, default keyword, and break statement.
