calling a static method from main?

[Sam Cooper]

I had come across this in a mock exam.
public class Test{
public static void main(String[] args){
int[] a = {1};
Test t = new Test();
t.increment(a);
System.out.println(a[a.length - 1]);
}
void increment(int[] i){
i[i.length - 1]++;
}
}
My initial guess is that you can call a non static method from a static (main), so this should result in a compile tim error. But the answer that was given to be
Complies and runs printing out 2.
Could some on please let me know whats going on here
SAM

[Sam Cooper]

I MEAN
My initial guess is that you CANNOT call a non static method from a static (main), so this should result in a compile time error. But the answer that was given to be
Complies and runs printing out 2.
Could some on please let me know whats going on here
SAM

[Holmes Wong]

Originally posted by Sam Cooper:
I had come across this in a mock exam.
public class Test{
public static void main(String[] args){
int[] a = {1};
Test t = new Test();
t.increment(a);
System.out.println(a[a.length - 1]);
}
void increment(int[] i){
i[i.length - 1]++;
}
}
My initial guess is that you can call a non static method from a static (main), so this should result in a compile tim error. But the answer that was given to be
Complies and runs printing out 2.
Could some on please let me know whats going on here
SAM

Here is the rule: you cannot call a non-static method from a static method, but you can use a reference to call a non-static method. Say, if you do:
increment(a); //illegal
Test t = new Test();
t.increment(a); //legal

[Sam Cooper]

Holmes:
Makes sense, Thanks