单选题public class Foo { public int a; public Foo() { a = 3; } public void addFive() { a += 5; } } and: public class Bar extends Foo { public int a; public Bar() { a = 8; } public void addFive() { this.a +=5; } } invoked with: Foo foo = new Bar(); foo.addFive(); System.out.println(”Value: “+ foo.a); What is the result?()A Value: 3B Value: 8C Value: 13D Compilation fails.E The code runs with no output.F An exception is thrown at runtime.
单选题
public class Foo { public int a; public Foo() { a = 3; } public void addFive() { a += 5; } } and: public class Bar extends Foo { public int a; public Bar() { a = 8; } public void addFive() { this.a +=5; } } invoked with: Foo foo = new Bar(); foo.addFive(); System.out.println(”Value: “+ foo.a); What is the result?()
A
Value: 3
B
Value: 8
C
Value: 13
D
Compilation fails.
E
The code runs with no output.
F
An exception is thrown at runtime.
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