Help. what's the output? why?

Question

int x=1;
switch(x){
case 1:x++;
case 2:x++;
default:x++;
}
System.out.println(x);

Answer 1

Why 4:

Normally you use a break; statement after a case:
x = 1 --> case 1: x++ break;
Jump out of the switch statement --> print 2

But without break; the code inside all cases (after the matched case) will be execute:
x = 1 --> case 1, case 2, default
x = 2 --> case 2, default
x = 4 --> default

Answer 2

Result = 4
Run this program
https://code.sololearn.com/cFrYPneSM16P/#java

In switch break statement is missing..
When break is missing the flow continues to pass from all cases.

Answer 3

Thanks