java类的生成（加载）步骤
总体上先父后子
具体体现于
1、先static，按顺序执行（无论static位于什么位置，都现执行）
2、再非static
3、再构造
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package
com.test.part7;
public
class
Test_2 {
/**
*
@param
args
*/
public
static
void
main(String[] args) {
new
A();
}
}
class
A
extends
C {
E
e
=
new
E();
A() {
System.
out.println("A
constructor" );
}
static
D
d
=
new
D();
}
class
B {
B() {
System.
out.println("B
constructor" );
}
}
class
C {
B
b
=
new
B();
C() {
System.
out.println("C
constructor" );
}
}
class
D {
D() {
System.
out.println("D
constructor" );
}
}
class
E {
E() {
System.
out.println("E
constructor" );
}
}
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D constructor
B constructor
C constructor
E constructor
A constructor
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重要例子［现加载含main的类，加载过程中会现加载static块如果有父类，那按先父到子加载)，再调用main方法，进行里面的代码初始化
new MyClass()，然后进行MyClass的加载，myClass继承于Test，Test在加载的时候已经加载了static的内容，剩下加载非static的内容］
public class Test
{
Person
person = new Person("Test");
static{
System.out.println("test
static");
}
public Test()
{
System.out.println("test
constructor");
}
public static void main(String[]
args) {
new MyClass();
}
}
class Person{
static{
System.out.println("person
static");
}
public Person(String
str) {
System.out.println("person
"+str);
}
}
class MyClass extends Test
{
Person
person = new Person("MyClass");
static{
System.out.println("myclass
static");
}
public MyClass()
{
System.out.println("myclass
constructor");
}
}
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