多项选择题
Which two demonstrate an “is a” relationship?()
A. public interface Person { } public class Employee extends Person { }
B. public interface Shape { } public class Employee extends Shape { }
C. public interface Color { } public class Employee extends Color { }
D. public class Species { } public class Animal (private Species species;)
E. interface Component { } Class Container implements Component ( Private Component[ ] children; )
相关考题
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多项选择题
public class MethodOver { public void setVar (int a, int b, float c) { } } Which two overload the setVar method?()
A. Private void setVar (int a, float c, int b) { }
B. Protected void setVar (int a, int b, float c) { }
C. Public int setVar (int a, float c, int b) (return a;)
D. Public int setVar (int a, int b, float c) (return a;)
E. Protected float setVar (int a, int b, float c) (return c;) -
多项选择题
public class ConstOver { public ConstOver (int x, int y, int z) { } } Which two overload the ConstOver constructor?()
A. ConstOver ( ) { }
B. Protected int ConstOver ( ) { }
C. Private ConstOver (int z, int y, byte x) { }
D. Public Object ConstOver (int x, int y, int z) { }
E. Public void ConstOver (byte x, byte y, byte z) { } -
单项选择题
public class test { public static void add3 (Integer i) int val = i.intValue ( ); val += 3; i = new Integer (val); } public static void main (String args [ ] ) { Integer i = new Integer (0); add3 (i); system.out.printIn (i.intValue ( ) ); } What is the result?()
A. Compilation will fail.
B. The program prints “0”.
C. The program prints “3”.
D. Compilation will succeed but an exception will be thrown at line 3.
