In autoore , a novel approach to extract java semantic relational model is presented . to get precise object relational result , the java code polymorphism invoke location is formal defined and a program analysis method based on extended class hierarchy graph ( echg ) is proposed 代碼抽取是oore的起點(diǎn),從起點(diǎn)開(kāi)始支持理解是逆向工程的重要目標(biāo), autoore在java抽取中,抽取模型采用文中提出的java詞法和語(yǔ)義兩個(gè)模型,利用一個(gè)基于java擴(kuò)展類(lèi)層次圖( echg )的多態(tài)調(diào)用點(diǎn)分析算法,得到更精確的靜態(tài)對(duì)象關(guān)系。