Java quiz. What happens when you run the following program? <

What happens when you run the following program?


class TestClass {
   int i = getInt();
   int k = 20;
   public int getInt() {  return k+1;  }
   public static void main(String[] args) {
      TestClass t = new TestClass();
      System.out.println(t.i + "  " + t.k);
   }
}

The program will compile, but an error will occur during the execution of
21 20 will be printed
The program will not compile
1 20 will be printed
None of the above

Explanation

During an object creation fields are initialized in order of their declaration.
The "i" field will be initialized first in the given example. At this time, the "k" field is not yet initialized (it contains a value of 0), and a k + 1 expression will result in 1. After that, a "k" field will obtain a value of 20.