java 建立執行個體時，裡面的執行個體變數首先初始化？？？

package cn.com.ch09;

public class LampTest {
public LampTest(){
System.out.println("構造Lamp...");
}
public void ligth(){
System.out.println("發光...");
}
public static void main(String[] args) {

System.out.println("建立白熾燈...");
IncandecentLamp iLamp=new IncandecentLamp();
System.out.println("建立熒光燈...");
LuorescentLamp ll=new LuorescentLamp();
System.out.println("建立節能燈...");
EnergySavingLamp el=new EnergySavingLamp();
}

}
class Filament{

public Filament(){
System.out.println("開始構造燈絲..");
}
}
class EnergySavingLamp extends LuorescentLamp
{
public EnergySavingLamp(){
System.out.println("開始建立節能燈...");
}
}
class IncandecentLamp extends LampTest{
private Filament filament=new Filament();
//建立執行個體時，首先初始化這個。這個初始化了？？？？？？？？？？？？？？？？？？

public IncandecentLamp(){
System.out.println("開始建立白熾燈...");
}

public Filament getFilament() {
return filament;
}

public void setFilament(Filament filament) {
this.filament = filament;
}
}
class LuorescentLamp extends LampTest
{
public LuorescentLamp(){
System.out.println("開始建立熒光燈...");
}
private static Filament filament=new Filament();
public static Filament getFilament() {
return filament;
}
public static void setFilament(Filament filament) {
LuorescentLamp.filament = filament;
}

}

package cn.com.ch09;public class LampTest {public LampTest(){System.out.println("構造Lamp...");}public void ligth(){System.out.println("發光...");}public static void main(String[] args) {System.out.println("建立白熾燈...");IncandecentLamp iLamp=new IncandecentLamp();System.out.println("建立熒光燈...");LuorescentLamp ll=new LuorescentLamp();System.out.println("建立節能燈...");EnergySavingLamp el=new EnergySavingLamp();}}class Filament{public Filament(){System.out.println("開始構造燈絲..");}}class EnergySavingLamp extends LuorescentLamp{public EnergySavingLamp(){System.out.println("開始建立節能燈...");}}class IncandecentLamp extends LampTest{private Filament filament=new Filament();//建立執行個體時，首先初始化這個。這個初始化了？？？？？？？？？？？？？？？？？？public IncandecentLamp(){System.out.println("開始建立白熾燈...");}public Filament getFilament() {return filament;}public void setFilament(Filament filament) {this.filament = filament;}}class LuorescentLamp extends LampTest{public LuorescentLamp(){System.out.println("開始建立熒光燈...");}private static Filament filament=new Filament();public static Filament getFilament() {return filament;}public static void setFilament(Filament filament) {LuorescentLamp.filament = filament;}}