多项选择题
A.静态方法 B.private方法 C.final方法 D.非private方法
现有: class Pencil { public void write (String content){ System.out.println ("Write"+content); } } class RubberPencil extends Pencil{ public void write (String content){ System.out.println ("Rubber Write"+content); } public void erase (String content){ System.out.println ("Erase "+content); } } 执行下列代码的结果是哪项?() Pencil pen=new RubberPencil(); pen.write("Hello");
A. Write Hello B. Rubber Write Hello C.编译错误 D.运行时抛出异常
现有: class Pencil { public void write (String content){ System.out.println ("Write"+content); } } class RubberPencil extends Pencil{ public void erase (String content){ System.out.println ("Erase"+content); } } 执行下列代码的结果是哪项?() Pencil pen=new RubberPencil(); pen.write ("Hello"); pen.erase ("Hello");
A. Write Hello Erase Hello B. Erase Hello Write Hello C.编译错误 D.运行时抛出异常
A. as B. is C. instanceof D. extends
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