Switch Case Java

Java allows us to use strings in switch expression since java se 7. Then starting from the first case it checks whether the variable value matches the case value. When a match is found and the job is done it s time for a break.

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Java String Switch Case Example

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Java Switch Case

It is known as nested switch statement.

Switch case java. First the switch case in java evaluates the expression or variable. Variables are not allowed. Flow diagram of switch case. The switch statement evaluates its expression then executes all statements that follow the matching case label.

Switch case statement is used when we have number of options or choices and we may need to perform a different task for each choice. Switch statement in java a switch statement allows a variable to be tested for equality against a list of values. 3 java nested switch statement. Hustle free logic building using the switch case results in improved efficiency.

Now if the value matches a certain case label then all the statements of the matching case label are executed. In this case august is printed to standard output. Java programming language has conditional and control statements which optimizes the logic while writing a program. There is no need for more testing.

The case statement should be string literal. The value for a case must be a constant or a literal. Each value is called a case and the variable being switched on is chec. When java reaches a break keyword it breaks out of the switch block.

We can use switch statement inside other switch statement in java. The body of a switch statement is known as a switch block a statement in the switch block can be labeled with one or more case or default labels. Using a switch case in java optimizes the readability of the code while working on multiple test expressions. Some important rules for switch statements.

The value for a case must be of the same data type as the variable in the switch. The syntax of switch case statement looks like this switch variable or an integer expression case constant. The switch statement evaluates the expression mostly variable and compares it with values can be expressions of each case label. This will stop the execution of more code and case testing inside the block.

If it matches it executes the code inside this case. Duplicate case values are not allowed. Switch case in java also supports the nested switch case which means a switch case within another switch case. You could also display the name of the month with if then else statements.