1 void f()
2 {
3       int i;  //这里编译时就会报错，未初始化
4 }

public class initialV
{int a=1;char c = 'c';//...等等
}

public class Counter
{int i;Counter(){i=7;}
}    

class Window {Window(int marker) { print("Window(" + marker + ")"); }
}class House {Window w1 = new Window(1); // Before constructor
  House() {// Show that we're in the constructor:print("House()");w3 = new Window(33); // Reinitialize w3
  }Window w2 = new Window(2); // After constructorvoid f() { print("f()"); }Window w3 = new Window(3); // At end
}public class OrderOfInitialization {public static void main(String[] args) {House h = new House();h.f(); // Shows that construction is done
  }
} /* 输出:
Window(1)
Window(2)
Window(3)
House()
Window(33)
f()
*///:~

import static net.mindview.util.Print.*;class Bowl {Bowl(int marker) {print("Bowl(" + marker + ")");}void f1(int marker) {print("f1(" + marker + ")");}
}class Table {static Bowl bowl1 = new Bowl(1);Table() {print("Table()");bowl2.f1(1);}void f2(int marker) {print("f2(" + marker + ")");}static Bowl bowl2 = new Bowl(2);
}class Cupboard {Bowl bowl3 = new Bowl(3);static Bowl bowl4 = new Bowl(4);Cupboard() {print("Cupboard()");bowl4.f1(2);}void f3(int marker) {print("f3(" + marker + ")");}static Bowl bowl5 = new Bowl(5);
}public class StaticInitialization {public static void main(String[] args) {print("Creating new Cupboard() in main");new Cupboard();print("Creating new Cupboard() in main");new Cupboard();table.f2(1);cupboard.f3(1);}static Table table = new Table();static Cupboard cupboard = new Cupboard();
} /* 输出:
Bowl(1)
Bowl(2)
Table()
f1(1)
Bowl(4)
Bowl(5)
Bowl(3)
Cupboard()
f1(2)
Creating new Cupboard() in main
Bowl(3)
Cupboard()
f1(2)
Creating new Cupboard() in main
Bowl(3)
Cupboard()
f1(2)
f2(1)
f3(1)
*///:~

public class Spoon {static int i;static {i = 47;}
} ///:~

class Mug {Mug(int marker) {print("Mug(" + marker + ")");}void f(int marker) {print("f(" + marker + ")");}
}public class Mugs {Mug mug1;Mug mug2;{mug1 = new Mug(1);mug2 = new Mug(2);print("mug1 & mug2 initialized");}Mugs() {print("Mugs()");}Mugs(int i) {print("Mugs(int)");}public static void main(String[] args) {print("Inside main()");new Mugs();print("new Mugs() completed");new Mugs(1);print("new Mugs(1) completed");}
} /* 输出:
Inside main()
Mug(1)
Mug(2)
mug1 & mug2 initialized
Mugs()
new Mugs() completed
Mug(1)
Mug(2)
mug1 & mug2 initialized
Mugs(int)
new Mugs(1) completed
*///:~