题目内容
现自:
1.interfaceColor{}
2.interfaceWeight{}
3.//insertcodehere
和以下足六个声明:
classBoatextendsColor,extendsWeight{}
classBoatextendsColorandWeight{}
classBoatextendsColor,Weight{}
classBoatimplementsColor,implementsWeight{}
classBoatimplementsColorandWeight{}
classBoatimplementsColor,Weight{}
分别插入到第3行,有多少行可以编译?()
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