下列代码中()是正确的interface com{int MAX;public void stop();void start();abstract void loop();}
A. void start();会导致编译错误
B. public void stop();会导致编译错误
C. abstract void loop();会导致编译错误
D. int MAX;会导致编译错误
下列选项中()代码替换源文件Com.java中的【代码】不会导致编译错误。public interface Com{int M=200;int f();}class ImpCom implements Com{【代码】}
A. public int f(){ return 100+M;}
B. int f(){return 100;}
C. public double f(){return 2.6}
D. public abstract int f();
下列选项中()代码放入程序中标注的【代码】处将导致编译错误。class A{public float getNum(){return 3.0f;}}public class B extends A{【代码】}
A. public float getNum() {return 4.0f;}
B. public void getNum(){}
C. public void getNum(double d){}
D. public double getNum(float d){return 4.0d;}