关于Inner Class的简单问题？

[llsoft]

我用Jcreator 一个关于Inner Class的例子，老是出问题，请大家帮忙找找原因：
public class Outer2 {
private int size;
public class Inner {
public void doStuff() {
size++;
}
}
public int getSize(){
return size;
}
}

public class TestInner {
public static void main(String[] args) {
Outer2 outer = new Outer2();

// Must create an Inner object relative to an Outer
Inner inner = outer.new Inner();
inner.doStuff();
System.out.println("Size is :"+outer.getSize());
}
}

Jcreator出错提示：
symbol : class Inner
location: class Outer.TestInner
Inner inner = outer.new Inner();
^

[abitoom]

Outer.Inner inner = new Outer().new Inner();

[dylanwolf]

Outer.Inner inner = outer.new Inner();

否则, 系统不认识内部类 Inner

[llsoft]

谢谢了，在Inner前面加上"Outer2."成功了，但是Sun的SL275上P7-31怎么可以这样写：
Inner inner = outer.new Inner();