class Tag
{
Tag(int marker)
{
System.out.println("Tag(" + marker + ")");
}
}

class Card
{
Tag t1 = new Tag(1);
Card()
{
System.out.println("Card()");
Tag t3 = new Tag(33);
}
Tag t2 = new Tag(2);
void f()
{
System.out.println("f()");
}
Tag t3 = new Tag(3);
}

public class Think
{
public static void main(String[] args)
{
Card t = new Card();
t.f();
}
}

答案：
Tag(1)
Tag(2)
Tag(3)
Card()
Tag(33)
f()。
class Card 會先去執行 Tag t1 = new Tag(1); 在去執行構造函數，最後你在Card t = new Card(); t.f();又調用你寫的方法，

class Bowl {
Bowl(int marker) {
System.out.println("Bowl(" + marker + ")");
}
void f(int marker) {
System.out.println("f(" + marker + ")");
}
}

class Table {
static Bowl b1 = new Bowl(1);
Table() {
System.out.println("Table()");
b2.f(1);
}
void f2(int marker) {
System.out.println("f2(" + marker + ")");
}
static Bowl b2 = new Bowl(2);
}

class Cupboard {
Bowl b3 = new Bowl(3);
static Bowl b4 = new Bowl(4);
Cupboard() {
System.out.println("Cupboard()");
b4.f(2);
}
void f3(int marker) {
System.out.println("f3(" + marker + ")");
}
static Bowl b5 = new Bowl(5);
}

public class StaticInitialization {
public static void main(String[] args) {
System.out.println(
"Creating new Cupboard() in main");
new Cupboard();
System.out.println(
"Creating new Cupboard() in main");
new Cupboard();
t2.f2(1);
t3.f3(1);
}
static Table t2 = new Table();
static Cupboard t3 = new Cupboard();
}
那为什么这里加上Static 输出的结果又不一样呢?

[此贴子已经被作者于2007-5-4 20:45:13编辑过]