public class Trees {
Trees t;
public static void main(String[] args) {
Trees t = new Trees();
Trees t2 = t.go(t);
t2 = null;
// more code here : LINE 11
}
Trees go(Trees t) {
Trees t1 = new Trees();
Trees t2 = new Trees();
t1.t = t2;
t2.t = t1;
t.t = t2;
return t1;
}
}
當達到11行,有多少個對象符合垃圾收集?
多少你能辨認出? –
什麼是't2.t'?請提供「樹」類的定義 – 2012-10-26 08:53:55
我建議你購買和閱讀SCJP 6書。它從垃圾收集過程中有50頁,它非常詳細和有用。 –