For loop

Question

I just started learning java, and a little confused if why this loop only runs 2 times, in my expectation this should run 3 times. Can someone kindly explain some answers. Thank you

public class Program {
public static void main(String[] args) {
for(int x=2; x<10; x=x*x) {
System.out.println(x);
}
}
}

Answer 1

Because after x = 2, x = x * x = 2 * 2 = 4

So 4 < 10 true

After 4, x = 4 * 4 = 16

So 16 < 10 false and loop will be break.

Answer 2

you can understand the *for* loop as this:
```
// init part
int x=2;
// condition check
while(x<10) {
// your block
System.out.println(x);

// increment/decrement/loop expression
x=x*x
}

Having this way, and looking the previous comment you'll understand what's going on... basicaly in second interaction, x is becoming 16, thus breaking the loop

Answer 3

NPCcode x+=x
2
2+2 = 4
4 +4 = 8

This will run your for loop code 3 times.

Answer 4

I see, thank you for answering guys