How the switch switch statement does not break is executed

In Java, switch usage format:

switch (expression)
{case
constant expression 1:  statement 1;  break;
....
Case constant Expression 2:  statement 2;  break;

Default: statement;

after each case followed by a break, as long as the match to execute the corresponding statement, it will jump out of the switch and then execute the following statement, this is very good to understand.

But if the case is not followed by a break, how the program will execute it.

The following procedure, according to the number 1-7 corresponds to the output of the corresponding English words:

        From the output results, you can see that  the number 3  matches case  3 after the  first time,

Does not match the case behind,

The sequence executes the following code until the break or default is met.