单项选择题
class Super { public int getLenght（） { return 4； } } public class Sub extends Super { public long getLenght（） { return 5； } public static void main（String[] args） {Super sooper = new Super（）； Sub sub = new Sub（）； System.out.println（ sooper.getLenght（） + “，” + sub.getLenght（） ）； } } What is the output？ （）
A. 4，4
B. 4，5
C. 5，4
D. 5，5
E. Compilation fails.
相关考题
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单项选择题
public void test（int x） { int odd = x%2； if （odd） { System.out.println（“odd）； } else { System.out.println（“even”）； } } Which statement is true？（）
A.Compilation fails.
B. “odd” will always be output.
C. “even” will always be output.
D. “odd” will be output for odd values of x， and “even” for even values.
E. “even” will be output for add values of x， and “odd” for even values. -
单项选择题
class Super { public int getLenght() { return 4; } } public class Sub extends Super { public long getLenght() { return 5; } public static void main(String[] args) { Super sooper = new Super(); Sub sub = new Sub(); System.out.println( sooper.getLenght() + “,” + sub.getLenght() ); } } What is the output?（）
A. Just after line 13.
B. Just after line 14.
C. Just after line 15.
D. Just after line 16 （that is， as the method returns）. -
多项选择题
Whichthreestatementsaretrue？（）
A. The default constructor initializes method variables.
B. The default constructor has the same access as its class.
C. The default constructor invoked the no-arg constructor of the superclass.
D. If a class lacks a no-arg constructor， the compiler always creates a default constructor.
E. The compiler creates a default constructor only when there are no other constructors for the class.
