多项选择题
Given：
Which two classes use the Shape class correctly？（）
A.public class Circle implements Shape {private int radius；}
B.public abstract class Circle extends Shape {private int radius；}
C.public class Circle extends Shape {private int radius；public void draw（）；}
D.public abstract class Circle implements Shape { private int radius；public void draw（）；}
E.public class Circle extends Shape {private int radius；public void draw（） {/* code here*/}}
相关考题
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单项选择题
Given： What is the result？（）
A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes normally and prints "foo".
D.The code executes normally， but nothing is printed. -
单项选择题
Given： Which statement is true？（）
A.The output could be 5-1 6-1 6-2 5-2
B.The output could be 6-1 6-2 5-1 5-2
C.The output could be 6-1 5-2 6-2 5-1
D.The output could be 6-1 6-2 5-1 7-1 -
单项选择题
Click the Exhibit button. What is the output if the main（） method is run？（）
A.4
B.5
C.8
D.9
