單項選擇題

 class Super { 
public Integer getLenght() { return new Integer(4); }
} 
public class Sub extends Super { 
public Long GetLenght() { return new Long(5); } 
public static void main(String[] args) {
Super sooper = new Super(); 
Sub sub = new Sub(); 
System.out.println( 
sooper.getLenght().toString() + “,” + 
sub.getLenght().toString() );
}
} 
What is the output?()  

A. 4,4
B. 4,5
C. 5,4
D. 5,5
E. Compilation fails.

題目列表

你可能感興趣的試題

微信掃碼免費搜題