JAVA初始化顺序

//: OrderOfInitialization.java
// Demonstrates initialization order.
// When the constructor is called, to create a
// Tag object, you'll see a message:
class Tag {
     Tag(int marker) {
     System.out.println("Tag(" + marker + ")");
 }
}
class Card {
     Tag t1 = new Tag(1); // Before constructor
     Card() {
         // Indicate we're in the constructor:
         System.out.println("Card()");
         t3 = new Tag(33); // Re-initialize t3
 }
 Tag t2 = new Tag(2); // After constructor
 void f() {
     System.out.println("f()");
 }
 Tag t3 = new Tag(3); // At end
}
public class OrderOfInitialization {
     public static void main(String[] args) {
         Card t = new Card();
         t.f(); // Shows that construction is done
 }

} ///:~

Tag(1)
Tag(2)
Tag(3)
Card()
Tag(33)
f()