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Detailed explanation of java logic control statement examples

王林
王林Original
2020-01-14 17:26:152542browse

Detailed explanation of java logic control statement examples

1. Java selection structure

1. if (condition)...else structure

When the condition == true, execute the statement under if. Otherwise, execute the statement under else

Detailed explanation of java logic control statement examples

2, if (condition 1)...else if (condition 2)...else structure (relevant video tutorial recommendation: java video tutorial

When condition 1==true, execute the statement under if (condition 1); when condition n==true, execute the statement under else if (condition n); when neither is satisfied Execute the statement under else

Detailed explanation of java logic control statement examples

3. switch (operation statement)...case value structure

When the result of the operation statement == the value of case, enter Corresponding case execution statement

default: No matter which case is entered, as long as there is no break, default will be entered in the end

break: Jump out of the current selection structure. If there is a break in the case entered, then directly Jump out of switch

3.1, without default and no break

Detailed explanation of java logic control statement examples

3.2, with default and no break

Detailed explanation of java logic control statement examples

3.3. There is default and break

Detailed explanation of java logic control statement examples

## 2. Java loop structure

1. While (conditional) loop, suitable for situations where the number of loops is unknown but the entry is known The condition of the loop is

When the condition == true, enter the loop

Detailed explanation of java logic control statement examples

2. do...while (condition) loop, suitable for situations where the number of loops is unknown , but knowing the condition to stop the loop is

The statement in the value loop, until the condition == false, jump out of the loop

Detailed explanation of java logic control statement examples

3. for loop , suitable for situations where the number of loops is known

Format: for (define a variable; condition; operation statement) {statement to be executed for each loop}

Detailed explanation of java logic control statement examples

3. return, break, continue

return: jump out of the current method and return data (optional)

break: jump out of the current logical structure

continue: jump out In this loop, execute the next loop (the code after continue in this loop will not be executed)

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