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题目内容 (请给出正确答案)
单选题
class Super {  public int i = 0;  public Super(String text) {  i = 1; }  }  public class Sub extends Super {  public Sub(String text) {  i = 2;  }   public static void main(String args[]) {  Sub sub = new Sub(“Hello”);  System.out.println(sub.i);  }  }  What is the result?()
A

 0

B

 1

C

 2

D

 Compilation fails.


参考答案

参考解析
解析: This code is perfectly legal and the answer is C. 
更多 “单选题class Super {  public int i = 0;  public Super(String text) {  i = 1; }  }  public class Sub extends Super {  public Sub(String text) {  i = 2;  }   public static void main(String args[]) {  Sub sub = new Sub(“Hello”);  System.out.println(sub.i);  }  }  What is the result?()A  0B  1C  2D  Compilation fails.” 相关考题
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考题 单选题class A {  public A() {  System.out.println(“hello from a”);  }  }  class B extends A {  public B () {  System.out.println(“hello from b”);  super();  }  }  public class Test {  public static void main(String args[]) {  A a = new B();  }  }   What is the result when main is executed?()A  Compilation fails.B  hello from aC  hello from bD  hello from b hello from aE  hello from a hello from b

考题 单选题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  4,4B  4,5C  5,4D  5,5E  Compilation fails.

考题 单选题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).