Three types of jump statements

break： The body of any loop statement , All available break Control the circulation process ,break Used to force out of the loop , And execute the remaining statements in the loop .

Change program control flow . be used for do-while,while,for You can jump out of the loop and execute the following statement （ Judge the entered scores break , If it is less than 0, It will be marked as an error state , And will immediately jump out of the whole for loop ）

continue： Statements are used in loop statements , Used to terminate a cycle process , That is to skip the statement that has not been executed in the loop body , Then, the next decision on whether to execute the loop .

return： Exit from current method , Return to the statement that called the method , And continue execution from the next statement of the statement .

Two formats of return statement ：

        1.return expression： Returns a value to the statement that calls the method （ The data type of the return value must be the same as that in the method declaration   The return value type of is consistent or the precision is lower than the declared data type ）

        2.return： When used in a method declaration void Declare that the return type is null , This return type should be used , It does not return any value .

So the conclusion is ：

break：switch sentence , Loop statement

countinue： Loop statement

return： Any statement that ends the current method has nothing to do with the loop